A very shallow bevel angle and the gap between the cutting edges and the ball-bearing pilot are the key features of this carbide-tipped bit. The gap collects adhesive residue that usually fouls the pilot and thus degrade the cut. Tool is a special 8° bevel tool with a gap (.287") to reduce glue build-up., #47210, diameter (D) 5/8, angle (a°) 8°, cutting Height (B) 15/32, shank (D) 1/4, overall length (L) 2-1/4, replacement bearing 47706, flutes 2, 47210 carbide Tipped special bevel trim 8 deg X 5/8 dia x 1/4 x 1/4 inch Shank