Solid Carbide replaceable blades. Tool body remains in place when changing blades, thus reducing down-time. Straight cutters have blades with two or four cutting edges, allowing them to be rotated and locked in identical positions. 1/2 inch shank tools are ideal for use in production applications. Clear economical advantage over conventional brazed tip tooling. The single blade can be rotated 180 degrees to give double the life of a conventional tool. Refs. RT/11(M) and RT/13 are ideally suited for use with Trend Combi worktop jigs. Refs. RT/11M and RT/12M have a shorter shank, designed for use with Makita 3600B and 3612BR, Ryobi and Hitachi routers. Refs. RT/15, 16 and 17 are suitable for fixed head machines only. Suitable for plunge cutting.