Southwire 3 8 in High Speed Steel 11 Step Drill Bit Modern Door Lever this item features 2 open Weather Resistant Fencing this item features 2 open slat style shelves Transitional Features No Additional Features Sink Shape Rectangular Color Family White Sink Material Cast Iron Cut Out Below Counter Depth (in 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 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