Southwire 3 8 in High Speed Steel 11 Step Drill Bit Tile 4 this 2 sided lift is strong this 2 sided lift is strong carbide tipped blade is included for cutting 2 times the material at 90 and 45 and more cuts per charge Split point self starting tip requires no pilot hole and penetrates faster Tri lobe shank reduced slippage and firm grim in the chuck Laser etched sizes for easy identification Double flute design for fast cuts and a true round hole every time Sub Brand N A Number of Hole Sizes 11 Diameters of Holes Drilled 3 16 in to 7 8 in Shank Size 3 8 in Shank Type Round Material High speed steel Set Individual Individual CA Residents: Prop 65 Warning(s) No