4 inch diameter attachment fits most drills and drivers. Velcro secures 4 inch scrubbing pads.;4 inch diameter scrub/scour pads (two blue, two pink) replacement pads are available;1/4 inch quick change steel shaft for dependable pad rotation and efficient scrubbing action;Superior performance when used with rechargeable drill or driver (not included);Made with pride in the USA

• Power Driven Scrub Pads for bathroom Soap Scum, Hard Water Stains, Mineral and Rust Deposits
• 4 inch diameter pads
• White, Blue, Pink

Power Driven Scrub Pads for bathroom Soap Scum, Hard Water Stains, Mineral and Rust DepositsDrillbrush