BLACK+DECKER 14PC Forstner Bit Set Marples No Dig Edging adjustable anytime before adjustable anytime before 72 Automotive Part Type Trailer Accessory Returnable 180 Day Series Name Forstner Sub Brand Hanson Bit Type Forstner bit Bit Length 3 11 16 in Shank Size 3 8 in Shank Type Round Material High carbon steel Case Type Hard Quick Change No For Use With Power tool For Use on Metal No For Use on Wood Yes Warranty None Set Individual Set Package Quantity 14 CA Residents: Prop 65 Warning(s) Yes Bit Diameter (Inches) 3 8 in Brand Model Compatibility Universal IRWIN Marples forstner bits drill clean and precise flat bottomed holes and pocket holes quickly and easily Diameters 3 4 in and smaller: designed for clean holes Diameters larger than 3 4 in: teeth designed for clean holes Cutting angles maximize speed of cut Reduced shank fits 3 8 in and larger drills and drill presses