Chamfer and even bevel solid-surface edges with one of these two bits. These large bits must be run at reduced speed in a high-horsepower router, #57258, diameter (D): 2-17/32, angle (a°): 30°, cutting height (B): 1-3/4, Shank (D): 1/2, overall length (L): 3-5/8, replacement bearing: 47707, flutes: 2, 57258 carbide Tipped Chamfer with ultra-glide ball bearing guide solid surface 2-17/32 DIA x 1-3/4 x 30 Deg x 1/2 inch shank