IRWIN Unibit 3 8 in 13 Step Drill Bit Hammer Drills Speakman’s Neo Shower and Tub Speakman’s Neo Shower and Tub System Combination completes the bathroom by adding bold style to a sleek look Series Name N A Brand Model Compatibility Fits most hammer drills Type Percussion Material High speed steel Tip Material Carbide Bit Length 12 in Shank Size 3 8 in Shank Type Round Compatible Tool Hammer drill Set Individual Individual Package Quantity 1 Case Type N A (no case) For Use on Brick Yes For Use on Concrete Yes For Use on Rebar No For Use on Stone Yes For Use on Tile No For Use on Wood No Bit Diameter (Inches) 3 4 in CA Residents: Prop 65 Warning(s) No Warranty None Maximum Drilling Depth 10 in wood and laminates 3 flatted shank won't slip in chuck Speed point tip for fast starting Laser marked sizes won't wear off with use Unibit #3 is engineered with M35 cobalt steel for maximum life when drilling in tough steel Unibit #3 cobalt contains a 3 8 in hex shank and contains 9 hole sizes 1 4 in 3 4 in (1 16 in steps) Unibit #1 contains a 1 4 in hex shank and will drill 13 hole sizes 1 8 in 1 2 in (1 32 in steps) Unibit #4 contains a 3 8 in hex shank and will drill 12 hole sizes 3 16 7 8 in (1 16 in steps) Sub Brand Unibit Brand Model Compatibility Universal Number of Hole Sizes 12 Diameters of Holes Drilled 1 8 in to 1 2 in Step Size 1 8 in Shank Size 3 8 in Shank Type Hex Material Black oxide coated HSS Set Individual Set Package Quantity 3 Warranty None CA Residents: Prop 65 Warning(s) Yes