The wide range Performance Line SG offers high-performance solutions for every application and material. Performance Line SG products achieve optimum results with excellent economic efficiency. The CC-GRIND®-STRONG bridges the gap between conventional grinding wheels and the modern alternative CC-GRIND®-SOLID. It combines the fast, ergonomic grinding of a CC-GRIND®-SOLID with a resin bonded abrasive as a backer. The bonded portion of the disc not only serves as a supporting backer, but is also used during grinding. Grinding disc for steel. Maximum grinding performance and excellent service life.