Produce three slightly different profiles using this bit - an edge bead with or without a fillet and a full corner bead - by altering the bit extension or rolling the workpiece between passes. This Group of hard-to-find tools is particularly suitable for antique reproductions and restoration projects. Use in a handheld or table-mounted router.#54172, diameter (D) 1-1/2, Radius (r) 3/8, cutting Height (B) 1, shank (D) 1/2, overall length (L) 2-7/8, B1 25/32, replacement bearing 47716, flutes 2, D1 1-3/8, 54172 carbide Tipped corner round 3/8 radius x 1-1/2 dia x 1 inch x 1/2 shank