Diamond grinding wheels are made of diamond powder, and there have the bond types of metal, resin, vitrified and electroplated bond. #diamond cut off wheelhttps://www.superabrasivetools.com/diamond-cut-off-wheel/#diamond grinding wheelhttps://www.superabrasivetools.com/diamond-grinding-wheel-catagory/#cbn grinding wheelshttps://www.superabrasivetools.com/