Amana Tool 57192 Carbide Tipped Corner Rounding 3/4 R x 2-1/8 D x 1 Inch CH w/Ultra-Glide Ball Bearing Router Bit Carbide Tipped SPECIFICATIONS: Diameter (D): 2-1/8 Cut Depth (A): 1-1/2 Radius (R): 3/4 Cutting Height (B): 1 Shank (d): 1/2 Overall Length (L): 3 Replacement Bearing: 47768 Flutes: 2 D1: 5/8