A resinoid bond plain wheel is mainly used for cylindrical grinding of hard-carbide measuring tools, cutting tools, moulds and for plunge-cut grinding as well as for form grinding. A bronze bond plain wheel is chiefly used for cylindrical, surface grinding of hard brittle nonmetals such as optical glass, ceramics and gems, ect. Symbol: 1A 1 Bond: B, M Spec: Grinding wheels diameter: 125mm -750mm