These bits are designed for slotting wood flooring, inlays and medallions, #45678, diameter (D) 1-1/4, Radius (r) 1/8, cutting Height (B) 1/4, shank 1/4 D) 1/4, overall length (L) 1-7/8, type Rounded, replacement collar, 7724, replacement bearing 47712, flutes 2, C 5/16, 45678 carbide Tipped flooring rounded dedicated Cutter 1/8 radius x 1-1/4 dia x 1/4 x 1/4 inch Shank with upper Bb