Amana Tool 57155 Carbide Tipped Lansen Stainless Steel Edge Sink and Trim with Ultra-Glide BB Guide Solid Surface 49/64 D x 1-1/2 CH x 12 Deg x 1/2 Inch SHK Router Bit Carbide Tipped 1/2 Inch Shank SPECIFICATIONS: Diameter (D): 49/64 Angle (a8): 58 Cutting Height (B): 1-1/2 Shank (d): 1/2 Overall Length (L): 3-1/2 Type: 1/8 Over-Hang Replacement Bearing: 47733 Flutes: 2 Countertop Thickness: 1/2 & 3/4