Used to clean wheel and brake disc hubs. No spark, cup-shaped, open-pored abrasive material cleaning pads reduce dust formation. Hook and loop attachment of cleaning pads suitable for wheel hubs up to 160mm. Base component designed with 11 mm outside hexagon with 3 contact surfaces for use with power drill. Wear resistance: approximately 100 vehicles per pad. Contains: (Qty.) (1) Base component, (3) 160 mm grinding wheels. For replacement cleaning pads, see part# 4960R-0160/3.