Southwire 3 8 in High Speed Steel 11 Step Drill Bit DIY Tool Kit Fits conveniently inside 12 in GlueCore Fits conveniently inside 12 in ) 60 Substrate Surface Usage Type Wood Maximum Optimal Temperature (F) 90 Paint Stain Waterproofer Product Type Wood Deck Stain & Sealer Coverage Area (sq 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