• Bits have upward shear angle for more efficient and smoother cut • Shear angle makes the bit slice the wood similar to the way a craftsman uses a hand plane • Cuts all composition materials, plywood, hard wood, and soft wood • Use on hand held and table mounted portable routers • hard wood and soft wood • Use on hand held and table moun ted portable routers. • 1/4 Shank - 3/8 Bearing - 2-3/16 • Cut Dia x Carb Ht=7/8 x 1/2 • Radius Ins.=1/4