IRWIN Unibit 3 8 in 13 Step Drill Bit Flooring new 15 Supply connections Flexible reinforced stainless This vanity brings a Supply connections Flexible reinforced stainless steel hoses Features Corrosion Resistant 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 Single fluted cutting edge for greater control and rounder holes Ideal for drilling holes in thin materials such as mild steel