The Perma-Grit® sanding tools are manufactured by the Englishman Ian Richardson. Ian is a very succesful modeler and he knows precisely our needs. Ian’s sanding tools speed up our work no end, they are extremely durable and can be used for toughest of jobs. You only have to try these once and you will never be without them. Perma-Grit® Tools are tungsten carbide abrasives. The grit (one of the hardest materials next to diamond) is metallurgically bonded to steel blanks. These sanding tools are especially effective with GRP and Wood and will outlast any amount of sandpaper.