Amana Tool MR0103 Miniature 3/16 D Flush Trim with 3/16 D Ball Bearing x 3/4 CH x 1/4 Inch SHK Carbide Tipped Router Bit Carbide Tipped 1/4 Inch Shank SPECIFICATIONS: Diameter (D): 3/16 Cutting Height (B): 3/4 Shank (d): 1/4 Overall Length (L): 2-7/16 Flutes: 2 D1: 3/16