Cut channels for pipes or cables using the ball end bit. The profile requires the cut to be made in a single pass. To reduce stress on the bit, cut an initial Groove using a straight bit matching the D1 dimension of the ball end bit, #45968, diameter (D) 1, radius (r) 1/2, cutting height (B) 15/16, shank (D) 1/2, overall length (L) 2-3/4, flutes 2, D1 11/32, carbide Tipped ball end 1/2 radius x 15/16 dia x 1/2 x 1/2 inch shank