For routing solid wood serving trays, Flat dishes, shallow bowls, and similar objects, use This 3-in-1 specialty plunging bit. It cuts Flat, smooth bottom surfaces, vertical walls, and a transition radius between them, all in one pass. Has a shank-mounted bearing so the bit can be used with a template or pattern, #45992, diameter (D) 1-1/8, Radius (r) 1/4, cutting height (B) 5/8, shank (D) 1/2, overall length (L) 2-5/8, replacement collar 47740, replacement bearing 47738, flutes 2, Carbide Tipped bowl & Tray 1/4 radius x 1-1/8 dia x 5/8 x 1/2 inch shank with upper Bb