| Features: *6 most commonly-used sizes to satisfy all your needs: 3mm, 4mm, 5mm, 6mm, 6.5mm, 8mm *Using high speed steel 4241, the surface of titanium plating process, in sharp at the same time, wear resistance is very high. *Fully ground spiral groove design quickly decreases friction and heat for a faster and cooler drilling performance. *135-degree split point with straight shank prevents walking and makes drilling precise and faster. *No center punch is needed. *Suitable for Cutting Hard Metal such as Stainless Steel, Steel and Cast Iron as well as Wood, Aluminum Alloy, and Other Softer Metals, including tiles, concrete, tiles, bricks, wood, plastic, glass, masonry and more. | |