Quick release discs for grinding natural and synthetic stones, glass, ceramics and hard metals. These quick released (Velcro) flexible diamond discsare for hand and fixed machine polishing. They should be used wet. All other backings and fixings available including M14, snail lock, self adhesive, plastazote and magnetic. Quick release diamond flexible material for wet grinding and polishing glass, ceramics, hard metals, natural stone including granite, marble and sandstone, and synthetic stone such as engineered stone. These diamond discs are colour coded in green, black, red, yellow, white, blue and orange for easy grade identification.