Amana tool 45964 Carbide Tipped Bal End 3/8 R x 11/16 D x 1/2 CH x 1/2 Inch SHK Router Bit

Cut channels for pipes or cables using this ball end bit. 2-Flute Industrial quality Carbide tippedTo reduce stress on the bit, cut an initial groove using a straight bit matching the D2 dimension of the ball end bit. Profile is used as a conduit for cables and pipes. Note: The profile requires the cut to be made in a single pass.