3M™ Flange Adapter holds together a minimum of seven 6 inch radial bristle discs for use on bench motors with a shaft size of 1 inch diameter.
For bench motors with shafts smaller than 25.4mm (1in), a 3M™ Telescoping Wheel Flange Adapter (Part No. 5) can be inserted into the center hole to fit 12.7 mm (1/2in), 15.875 mm (5/8in), 19.05 mm (3/4in) or 22.23 mm (7/8in) shafts. When a greater thickness of bristle discs is needed, 3M™ Spindle Extender Adapters (Part No. 30134) can be added to increase the disc capacity of the flange adapter. These additional adapters are sold separately.