It is compatible with Bosch concrete grinders with an M14 thread. The Backing Flange clamps all discs with 115-150 mm diameter manufactured after 08/90.Backing flange for M14 threadfor clamping all discs with 115 – 150 mm diameter manufactured after 08/90• Clamps Discs With 115-150 mm Diameter• Backing Flange clamps all discs with 115-150 mm diameter manufactured after 08/90• Compatible with Bosch concrete grinders with an M14 thread



