HSS Twist Drill Bits For Iron For Copper Feature:1. Fast operation: The twist drill bit has spiral coils for easier chip removal and high drilling efficiency.2. Accurate Use: Equipped with 118 degree angle and 29mm diameter blade, which ensures good working accuracy.3. HSS material: forged from top quality high-speed steel with good hardness, very tough, stable and reliable.4. Wide Tool: Allows for wide application on iron, aluminum, copper, stainless steel and many other materials.5. Easy to Install: 1/2in shank straight, lightweight and compact size makes the installation much more convenient. Specification:Item Type: Twist Drill Bit Product Material: High Speed SteelShank Diameter: Approx. 12.7mm/0.5inBlade Length: Approx. 75mm/2.95inBlade Diameter: Approx. 29mm/1.14inApplication: Suitable for Iron, Aluminum, Copper, Stainless Steel, High Speed Steel, Manganese Steel Steel, Various Hardened Steel Parts. Packaging List: 1 x Twist Drill 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.