With the Milwaukee Shockwave hss-g TiN Red Hex metal drill bits, you can drill clean, accurate holes through sheet metal and steel profiles with speed and control. The 135° tip angle with Quad Edge geometry delivers immediate precision without walking across smooth surfaces, eliminating the need to center punch. a durable Titanium Nitride coating disperses friction heat, keeping the drill bit cool at higher speeds and extending its service life. Featuring a 1/4" hex shank, it locks firmly into impact drivers and standard drills for quick bit changes. This pack includes 2 bits with a 4 mm diameter, 26 mm working length, and 71.5 mm total length.