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6 Most Common Size - 3mm, 4mm, 5mm, 6mm, 6.5mm, 8mm, to satisfy all your needs. This drill bits set fits the majority of power drill currently on the market.
Premium Quality - Made of HSS Material with Titanium Coated, the drill bits edge sharp, faster with less effort. Provides 2X life over standard impact drill bits.
Fully Ground Spiral Groove Design - Quickly decreases friction and heat for a faster and cooler drilling performance. 135° Split Point with straight shank prevents walking and makes drilling precise and faster.
High Drilling Efficiency - The center of the product has sharp serrations, and with its help, the drill can continue to drill horizontally after drilling.Long flutes for efficient chip evacuation.
【Premium Material】This twist drill bit is made of HSS material with titanium coated,the drill bits body edge, which increases wear resistance and durability.Fully ground spiral groove design can quickly remove particles, reduce friction and heat for a faster and cooler drilling performance.
【Product Size】8 most commonly-used sizes：3mm, 4mm, 5mm, 6mm, 6.5mm, 7mm, 8mm, 10mm which can satisfy your daily needs.It fits most of power drill and come with a portable plastic bag for easy storage and organization.
【135° Split Point】The 135° split point with straight shank prevents walking and allows precise drilling. No center punch is required.The sharp edge makes drilling faster and more effective.Good addition to your drill bit collection.
【High Efficiently】The sharp serrations design can continue to drill horizontally after drilling.The round shank is suitable for electric drills and bench drills and is fastened without slipping.It is easier and safer, and will not slide or fall off.
【Wide Application】This serrated drill bit set are ideal for DIY projects, home maintenance and repairs.Suitable for pulling groove, boring or cutting 1mm-2mm of thin wood, solid wood, multilayer board, plastic board, aluminum, thin iron sheet, aluminum alloy.
HSS Titanium Coating - Classic HSS construction with titanium coating for capability and durability. The cutting edge is hardened and honed for sharpness, chatter-free design with staggered cutting teeth ensure the precise countersinking and hole smooth clean.
Flutes Form - 2 flutes form helps clear chips and debris away from the bit, decreasing friction and heat for a faster, cooler drilling process.
Quick Change - 1/4 inch hex shank fits into all power tools more easily and securely, specially for locking into quick change chuck.
Meet Your Demands - Great drill bits set for metal/wood/plastic countersink. Suitable for Home DIY, and General Building/Engineering Use.
Organized Holder - A drill bits holder with size index is included in the set for easy storage and organizing. The drill bits set fits the majority of brands currently on the market.
DIMENSIONS - Include 20PCS 1/16" Cobalt Drill Bits, packed in a plastic box for easy storage
APPLICATION - Ideal for precision drilling on stainless steel and other hard materials for longer service life, such as drilling stainless steel, iron castings, copper, aluminum and other soft metals as well as plastics, wood etc
MATERIAL - Our drill bits for metal is made of Industry grade M35 High Speed Steel, containing 5% cobalt, All grinding drill bit, smooth surface, high grinding precision, sharp edge, durable
FEATURES - 135° standard industrial double rear edge Angle, self-centering to prevent walk-off and faster chip .Double spiral cutting slot design, large capacity cutting space, good cutting performance, improve drilling efficiency
SHANK DESIGN - The more than 1/2 Inch reduced shank is compatible with all drill presses and most power tools in the market, and the unique Tri-flatted shank end locks onto a 3-jaw chuck more tightly and securely to eliminate slippage during operation
Premium Material: Manufactured from high speed steel for strength and durability
Storage: Supplied in a plastic storage box for easy storage and transportation
Widely Used: The 135° fast cutting point is automatically centered and penetrates quickly with less pressure,The drill kit meets all your requirements, including all common size specifications for Wood/Cast Iron/Aluminum Alloy/Plastic/Fiberglass
Process Treatment: Titanium coated surface prevent rusting,which increase the hardness of the drill bit and reduces heat buildup, make the twist drill bit more wear-resisting for longer life
Comprehensive Drill Bit Set - Including 6 sizes - 3mm, 4mm, 5mm, 6mm, 6.5mm, & 8mm, ensuring that you have the exact size needed for each task. These Titanium Coated HSS Twist Drill Bits fit the majority of power drills on the market.
Superior Titanium Coating - The twist drill bits are manufactured from premium HSS material and coated with sturdy titanium, ensuring that the bit edges stay sharper, longer to satisfy all your needs.
Optimized for Precision & Speed: With a fully ground spiral groove design, these drill bits minimize friction and heat, allowing for a cooler and swifter drilling action. The 135° split point and straight shank design prevent "walking" and ensure rapid, precise starts, which translate to faster drilling with no time wasted.
Enhanced Efficiency - Our drill bits with a sharp central serration, significantly improves chip evacuation, increasing overall drilling efficiency and making the process smoother and quicker.
Wide Range of Applications: Whether it's a thin board, wood, aluminum alloy, plastic, or undergoing groove processing, our twist drill bit set is your go-to tool.
Twist drill bits are among the most common and versatile types of drill bits used for drilling holes in a variety of materials, including metal, wood, plastic, and more. Their spiral shape allows them to efficiently remove material as they drill, making them suitable for a wide range of applications. With an array of materials, coatings, and sizes available, choosing the right twist drill bits can significantly impact the efficiency, accuracy, and outcome of your drilling projects. This guide will provide you with essential considerations to help you select the best twist drill bits for your needs.
Key Features to Consider
Material
High-Speed Steel (HSS): Durable and suitable for general-purpose drilling in most materials.
Cobalt (HSCO): Higher heat resistance than HSS, ideal for drilling in hard materials like stainless steel.
Carbide: Offers the highest hardness and heat resistance, best for professional use in specialized applications.
Coating
Black Oxide: Provides heat resistance and lubricity, extending the bit’s life.
Titanium Nitride (TiN): Increases hardness and reduces friction, suitable for repetitive drilling in softer materials.
Titanium Aluminum Nitride (TiAlN): Offers superior heat resistance, ideal for high-speed drilling in tough materials.
Size and Length
Size Range: Ensure the set includes the sizes you commonly use. Drill bit sizes are usually marked in fractions of an inch, metric measurements, or wire gauge numbers.
Length: Standard lengths are suitable for most applications, but longer or shorter bits may be needed for specific tasks.
Point Type
118-degree Point: Standard point type, suitable for a wide range of materials.
135-degree Split Point: Starts drilling on contact with less force, minimizing “walking” or slipping.
Shank Type
Round Shank: Fits most standard drills but may slip under high torque.
Hex Shank: Offers better grip and prevents slipping, ideal for use with impact drivers.
Flute Design
Standard Flute: Suitable for drilling in soft materials where chip removal is not a significant issue.
Parabolic Flute: Designed for faster chip removal, reducing heat and improving efficiency in harder materials.
Pros and Cons
Pros of Twist Drill Bits
Cons of Twist Drill Bits
✔️ Versatile, suitable for drilling a wide range of materials
❌ Can wear quickly when used on inappropriate materials
✔️ Available in various materials and coatings to match specific needs
❌ Higher-quality materials and coatings can be expensive
✔️ Wide range of sizes and lengths for different applications
❌ Specific point types and shank designs may be required for certain tasks
✔️ Can be resharpened to extend life, depending on the material
❌ Incorrect use or selection can lead to poor performance and damage to the workpiece
Quick Tips
Assess Your Needs: Consider the materials you most frequently drill into to choose the appropriate drill bit material and coating.
Invest in a Set: Buying a set of twist drill bits can provide a good range of sizes for various projects.
Match the Bit to the Drill: Ensure the shank type of the drill bits is compatible with your drill, especially if using an impact driver or a drill with a high torque output.
Selecting the best twist drill bits involves considering the material, coating, size and length, point type, shank type, and flute design. The ideal twist drill bits for your projects will offer the durability, efficiency, and precision needed to achieve clean, accurate holes in your chosen materials. Whether you’re a professional tradesperson or a DIY enthusiast, investing in high-quality twist drill bits tailored to your specific needs can greatly enhance your drilling capabilities, leading to better results and more enjoyable work.
