Ensuring high hardness and durability, increased heat resistance and wear resistance. The cobalt material gives the bit great wear resistance and overall toughness, making it great for long-term use in a variety of drilling applications. Quick and Clean Drilling: with effective chip removal to prevent clogging, perfect for a range of materials including metal, wood, and plastic. Wide Applications: This cobalt twist drill bit is suitable for a variety of drilling applications, including metalworking, woodworking, and plastic fabrication. It is great for use with harder materials such as stainless steel, titanium, cast iron, malleable iron, harden metal and other alloys, wood, and plastic, and is well-suited for both DIY and professional use Note: Please add coolant when drilling continuously at high speed, the working life of the twist drill bits can be largely prolonged by proper usage. To optimal performance and , it is important to use proper drilling techniques when using this cobalt twist drill bit. Color: As Shown Material: Steel Package Contents: 1 x tungsten steel alloy milling cutter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.