Based on a 1/2" parallel shank, this multi-stepped arbor may be used for the mounting of slitting saws with bore sizes of 5/8", 3/4", 7/8" and 1" with a maximum thickness of up to 3/16". Recommended maximum saw diameter is 4". The arbor may be mounted either into a standard collet chuck or any other suitable method of holding a parallel shank. At the end of the parallel shank is a flat which ensures that if a grub screw is used to fix the shank in place it will not raise a burr and lock the arbor into the fitting. The unit is supplied complete with hexagon key.