Shank-mounted ball-bearing for pattern and template routing., #45565, diameter (D) 1, cutting Height (B) 7/16, shank (D) 1/2, overall length (L) 2-1/2, replacement collar 47740, replacement bearing 47754, flutes 2, 45565 carbide Tipped bottom cleaning 1 inch dia X 7/16 x 1/2 shank with upper Bb & up Shear design