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PREMIUM STEP BIT: Each unibit is constructed of industrial high-speed steel with a titanium nitride coating for durability and strength to punch and drill clean holes in materials like plastic, aluminum, wood, copper, stainless steel, and other types of sheet metal.
STEP DRILL BIT FOR METAL: With a split point tip that accelerates cutting speed while preventing angled walking away from center line of bore, drilling holes in metal is fast, efficient, and clean.
SPIRAL DESIGN: The two-flute spiral grooved design deburrs chip, dust and debris for clearance and smooth cutting. With 31 step sizes, each hole made with these step bits will be precise.
QUICK-CHANGE: The 1/4-inch hex shank makes for easy, convenient, and quick stepper bit switches and is compatible with impact ready power tools.
INCLUDES: Each bit set comes with 3 drill bits of a combined 31 sizes to add to your drilling arsenal: 13 step drill (1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2-inch) 6 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2-inch) and 12 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8-inch).
HSS Titanium Coating: Our high-speed steel drill bits, fortified with a titanium coating that makes the drill bit harder than a typical HSS bit, can reduce the friction drill, and perform well in heat, corrosion, and rust resistance.
Precision-Engineered Design: Two-flute spiral grooved design deburrs chips, dust and debris for clearance and smooth cutting. The 118° split point tip drill reduces friction, pressure, and heat, making the drill bits long-lasting and efficient.
Wide Application: Our step drill bit can process different diameter holes, and can be used on materials such as metal heavy-duty, iron, aluminum, brass, plastic, aluminum alloy, wood, plastic, etc. Suitable for home DIY and general use.
Quick Change: The 1/4-inch hex shank fits easily and securely into all power tools to prevent slippage and shedding during rotation.
Enhanced Durability with Titanium Coating: Our high-speed steel (HSS) drill bits, fortified with a titanium coating, offer exceptional durability and maintain sharpness even through demanding tasks. The titanium coating increases wear resistance and minimizes friction, resulting in cooler operation.
Versatile Hole Processing: Our step drill bits cater to a wide range of hole diameters, effectively eliminating the hassle of switching between multiple bits. This versatility proves invaluable for tasks involving metal, wood, and plastic, including countersunk holes.
Precision-Engineered Design: The split point tip, set at a 135-degree angle, significantly enhances wear resistance, making the drill bits long-lasting and efficient. The innovative two-flute design facilitates smoother cutting and enables easy evacuation of material particles, promoting cleaner and more precise drilling operations.
Convenient Storage Solution: Our step bit set comes complete with a purpose-designed holder featuring a size index. This inclusion ensures effortless organization and storage, preventing the bits from falling out and keeping your workspace tidy.
Comprehensive Set: This step drill bits set encompasses five commonly used sizes, granting you the flexibility to work with a wide array of materials and hole dimensions.
Ultimate Drill Bits Set- This unit step drill bit includes 5 step bits in sizes 3/16-1/2'', 1/8-1/2'', 1/4-3/4'', 3/16-7/8'', 1/4-1-3/8'', effectively replacing 50 sizes of conventional drill bits. Along with a center punch. Additionally, the counter sinker drill bit set in sizes 1/4'', 3/8'', 1/2'', 5/8'', 3/4''.
Premium Quality Drill Bit Set - Our countersink and step drill bit set is made from high speed steel for longer cutting edge life even at extreme temperatures.step drill set with a titanium coating significantly improves durability and sharpness for less friction and cooler operation,performs well in heat, corrosion and rust resistance.
Premium Design - Counter sinker drill bit set very suitable for sinking 90 degree holes in wood and soft metal countersunk screws and fasteners. Step drill with 118 ° split tip and double groove design, increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily.
Wide Range of Applications-This versatile set of HSS step drill bits and taps is suitable for various materials such as steel, copper, wood, aluminum, plastic, and sheet metal. It is perfect for professionals and DIY enthusiasts working in industries like automotive, construction, woodworking, and more.
Convenient Storage and Organization- By combining the capabilities of multiple tools in one, our HSS step drills and taps help users minimize the number of tools required for different tasks, effectively decluttering workspaces and simplifying tool management. These practical and functional woodworking tools make an excellent gift for Father's Day.
Extreme Durability: Cobalt high speed steel drill bits along with the titanium coating ensures extreme durability, will stay new and shiny for years to come.
Different Sizes of Holes Can Be Drilled: Different sized shanks ensure compatibility with 1/4, 3/8 and 1/2 in. chuck sizes. You are capable to drill holes in different sizes which can meet your normal needs.
Smooth Drilling: Non-walking drill tip provides fast and smooth drills on steel sheets, aluminum sheets, wood board, plastic board etc. (the board must be smaller in thickness than the height of step drill bits).
Use Center Punch to Mark the Spot: Please mark the spot that you are to drill for easier drilling and improved drill bits life.
Keep Your Step Drill Bits Well Organized: All the bits come in a well-organized case for easy transport and storage.
HSS Titanium Coating: The step drill has excellent sharpness and durability due to its high speed steel material and titanium coating
118° Split Point Tip & Dual-flute Design: increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily
50 Sizes in 5 Pcs: The step drill bit kit includes 5 standard pieces with totally 50 sizes for versatility, enough for your DIY needs
Widely Application: Ideal for drilling holes in plastic, aluminum, iron and many other types of sheet metal (Not recommended for stainless steel & wood)
Equipped with a well-organized case, make it more convenient for using and storing the step drills
ENHANCED DURABILITY: Our industrial-grade step drill set is meticulously crafted from high-quality alloy steel and undergoes multiple manufacturing processes. Each drill bit is carefully inspected at the factory to ensure superior quality and longevity.
IMPROVED STABILITY: Unlike ordinary step drills that often suffer from deflection during cutting, our four-flute step drill bit provides exceptional stability. This feature enhances accuracy and cutting speed, making it perfect for stainless steel drilling. In fact, it offers a significantly longer service life compared to regular step drills.
5PCS NITRIDING STEP BIT KIT: Our 5-piece nitriding step bits set includes a range of sizes to cater to various drilling needs. The set comprises step bits with diameters of 3/16"-1/2" (6 steps), 1/8"-1/2" (13 steps), 1/4"-3/4" (9 steps), 3/16"-7/8" (12 steps), and 3/16"-1-3/8" (19 steps). All these bits come in a sturdy blow molded case for easy storage and transport.
VERSATILE DRILLING CAPABILITY: With its powerful drilling capability, our step drill is suitable for piercing holes in various materials, including thin metal, copper, aluminum, iron, carbon steel, wood, and plastic. It's an essential addition to any DIY enthusiast's toolbox and can be utilized for a wide range of household projects.
USER-FRIENDLY DESIGN: Our step drill bits feature laser-engraved step sizes, ensuring clear visibility and eliminating concerns about wear and tear during use. This design element enhances convenience and accuracy, making the drilling process easier and more efficient.
Premium Durability and Sharpness- Crafted from high-speed steel (HSS) with a titanium coating, these step drills are built to withstand abrasion, heat, and corrosion. The rust-resistant design ensures extended lifespan, making it perfect for professional or DIY drilling tasks.
Precision-Engineered 118°Split Point Tip- The 118° split-point tip enhances drilling speed while minimizing walking, ensuring precise operation. The step drill features a 2-straight-flute design for efficient chip removal and smooth drilling performance.
Laser Engraved for Accuracy- Each step drill is laser-engraved with size markings, helping you achieve pinpoint precision. This user-friendly feature makes these drill bits an excellent choice for both novices and experts.
Automatic Center Punch for Hassle-Free Setup- The included automatic center punch creates slight indentations to keep your step drill in place. This ensures effortless drilling without slipping, even on smooth surfaces.
Versatile 50 Sizes for Endless Applications- This set of step drills offers 50 different sizes ranging from 1/8" to 1-3/8", accommodating diverse engineering, crafting, or household needs. From small projects to complex designs, this kit is a go-to solution.
Step drill bits, also known as unibits, are versatile tools designed for drilling holes in metal, plastic, and other materials, with the ability to enlarge holes progressively without changing bits. Ideal for electricians, metalworkers, and DIY enthusiasts, step drill bits are perfect for projects requiring precision and efficiency in creating holes of various diameters. With their unique stepped design, these bits can deburr holes as they drill, providing clean, smooth finishes. Selecting the right step drill bit requires understanding the specific features that match your project needs. This guide will help you navigate through those features to choose the best step drill bits for your tasks.
Key Features to Consider
Material
High-Speed Steel (HSS): Offers durability and is suitable for drilling into softer metals and plastics.
Cobalt (Co): Provides superior heat resistance and longevity, ideal for drilling into harder metals.
Titanium Coating: Increases the bit’s hardness and reduces friction, extending the lifespan and performance when drilling into various materials.
Number of Steps
Step Count: The number of steps on the bit determines the range of hole sizes it can drill. More steps allow for more size options but may result in less material between each step.
Size Range
Drill Size Range: Ensure the bit covers the range of hole sizes you need for your project. Some sets come with multiple bits to cover a wider range of sizes.
Shank Type
Round Shank: Fits most standard drills but may slip under high torque.
Hex Shank: Provides a better grip, reducing the chance of slipping, especially in high-torque applications.
Flute Design
Single Flute: Offers faster chip removal but may not be as stable as multi-flute designs.
Double Flute: Provides better stability and smoother cutting, ideal for precise drilling tasks.
Tip Angle
Tip Angle: Affects the ease of starting a hole. A split-point tip can start drilling on contact without a pilot hole, reducing “walking.”
Durability and Heat Resistance
Construction Quality: High-quality materials and construction ensure the bit can withstand the heat and pressure of drilling through tough materials.
Pros and Cons
Pros of Step Drill Bits
Cons of Step Drill Bits
✔️ Can drill holes of various sizes with one bit
❌ Higher-quality bits can be expensive
✔️ Ideal for thin materials, including metal and plastic
❌ Not suitable for drilling into very hard or thick materials
✔️ Produces clean holes and can deburr automatically
❌ Limited step depth may not be suitable for all material thicknesses
✔️ Reduces the need for multiple drill bits
❌ Can wear out faster if used improperly or on inappropriate materials
Quick Tips
Assess Your Material: Choose a bit material and coating based on the hardness of the materials you frequently drill.
Consider the Size Range: Select a bit or set that covers the hole sizes you most commonly need for your projects.
Opt for Quality: Investing in a higher-quality bit with a durable coating can save money in the long run by reducing the need for replacements.
Selecting the best step drill bits involves considering the material, number of steps, size range, shank type, flute design, tip angle, and overall durability and heat resistance. The ideal step drill bit for your projects will offer the versatility, efficiency, and precision needed to tackle a wide range of drilling tasks. Whether you’re working on metal fabrication, electrical installations, or general DIY projects, investing in high-quality step drill bits can significantly enhance your ability to create precise holes of various sizes, leading to better results and more efficient project completion.
