LMT Belin - 33635 1/4" Cut Diameter ACM Profiling Upcut Router BitBelin tools are made of solid carbide which ensures that they stay sharp much longer than high speed steel tooling.. Cut Diameter: 1 4" Shank: 1 4" Cut Length: 5 8" Overall Length: 2" Flute Type: Upcut The single upcut flute allows chips to be cleared very efficiently at high speeds. The tools are designed for high clearance on the backside of the flute to minimize heat buildup and therefore do not require lubrication. They are especially effecting