For lettering, engraving, signmaking, Fluting and decorative trimming, #56125, diameter (D): 1/4, radius (r): 1/8, cutting height (B): 5/16, shank (D): 1/4, overall length (L): 2, B1: 1/8, Type: Solid carbide, flutes: 1, 56125 Solid Carbide point cutting round over 1/8 radius x 1/4 dia x 5/16 x 1/4 shank router bit