Carbide Tipped - down Shear angle - 3 flute with ball bearing guide., #49346 diameter (D) 20mm (51/64), cutting height (B) 13.5mm (17/32), shank (D) 1/4, overall length (L) 2-1/8, flutes 3, C 3.5mm (9/64) - 5.5mm (7/32), 49346 binding/Rabbeting 20mm (51/64) dia x 13.5mm (17/32) x 1/4 inch shank router bit set