Wedge Tongue & Groove Bit 1-1/2'' Dia. x 1-3/16'' Cutter x 1/2'' Shank K10 and K20 grade carbide for clean cutting action. Final sharpening with 600 - 800 grit diamond wheels. Precision balanced for smooth operation. Baked-on anti-stick coating to reduce pitch and resin buildup. 100% Satisfaction Guarantee.