Got a grinding problem? Diagrind says it has a solution. Since 1967, the company has been successfully tackling the toughest internal grinding applications. Its standard vitreous metal bonding system combined with the performance of diamond and CBN has proven up to the task, regardless of material. Diagrind tools range from 0.025"-3" in diameter, both unmounted and mounted on carbide shanks. Diagrind VM bond is engineered to perform better, according to the company.