This one bit is designed to cut more than 40 different molding patterns. By making simple adjustments to the cutter height and fence position, and making two or more passes, you can produce a wide variety of profiles and architectural details.#54198, Diameter (D) 1-1/4, Radius (r) 3/16, cutting height (B) 1, shank (D) 1/2, overall length (L) 2-7/8, R2 1/8, replacement bearing 47702, R1 9/64, flutes 2, 54198 carbide Tipped classical multi-form 1-1/4 dia x 1 inch x 1/2 shank