IRWIN Marples 2 1 8 in Woodboring Forstner Drill Bit Insulation Accessories AAA industrial triplex plunger pump 314835204 AAA industrial triplex plunger pump with PowerBoost technology delivering higher pressure at the nozzle for improved impact and cleaning performance the color matched adjustable speed closer and heavy duty weatherstrip help seal out harsh weather and drafts IRWIN Marples Forstner bits drill clean and precise flat bottomed holes and pocket holes quickly and easily Teeth designed for clean holes Cutting angles maximize speed of cut Reduced shank fits 3 8 in and larger drills and drill presses Series Name N A Sub Brand Marples Bit Type Forstner bit Bit Length 3 11 16 in Shank Size 3 8 in Shank Type Round Material High speed steel Case Type N A (no case) Quick Change No For Use With Power tool For Use on Metal No For Use on Wood Yes Warranty None Set Individual Individual Package Quantity 1 CA Residents: Prop 65 Warning(s) Yes Brand Model Compatibility All Bit Diameter (Inches) 2 1 8 in