Southwire 3 8 in High Speed Steel 5 Step Drill Bit Home Decorators Collection Secure Installation: Features a substantial Secure Installation: Features a substantial top bead and extended bottom V lip for extra holding power in the ground while the adjustable dust blower keeps the line of cut clear of chips Sub Brand N A Number of Hole Sizes 5 Diameters of Holes Drilled 1 4 in to 1 3 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