Fits both the Sedgwick SM210 and SM255t spindle moulders. The router spindle is designed to allow you to use 1/2" shank router cutters on the spindle moulder. It is invaluable when producing long runs of small mouldings that would put too much demand on a router. The spindle is interchangeable with the standard spindle supplied with the machine. It comes with a 1/2" collet, nut and spanner.