IRWIN 4 in 6PC Drill Bit Set Miter Saws All ball bearing construction for durability All ball bearing construction for durability and longer tool life at the garage and holds up to anything the jobsite throws at it Case includes a full length metal hinge pin for maximum durability and long life Series Name N A Sub Brand SPEEDBOR Bit Type Self feed bit Bit Length 4 in Shank Size 1 4 in Shank Type Hex Material High speed steel Case Type Hard Quick Change Yes For Use With Power tool For Use on Metal No For Use on Wood Yes Warranty None Set Individual Set Package Quantity 6 Brand Model Compatibility Universal CA Residents: Prop 65 Warning(s) Yes Bit Diameter (Inches) Assorted