The duMont Corp. is offering a complete set of high speed steel broaches, guide bushings and necessary shims for cutting 1/8", 3/16", 1/4" and 3/8" keyways in 36 keyway combinations. In addition to its four broaches, the No. 10-10A set will handle a wider range of keyway cutting in machine maintenance or parts production work. Broaches are supplied with high speed steel. Push type broaches can be used with any hydraulic press with adequate throat depth. Other keyway broach sets contain smaller or larger broaches and bushings and extend the range of keyway sizes that can be cut from 1/16" to 3/4" keyways in bores from 1/4" to 3" bore diameters.