Titanium Nitride (Tin) Coating Lasts 2.5X Longer Than Non-Coated Bits | | 135 Degree Split Point Geometry For Faster Starts And Reduced Walking | | Impact Rated: For Use In 1/4 Inches Hex Impact Drivers | | For Drilling Holes In Ferrous Metal, Wood, Plastic, Non-Ferrous Metal, Cast Iron And Stainless Steel |