About this item [IN THE BOX]: The 6 Piece Brake Hub Resurfacing Starter Kit includes: 1x Holder and 5x Cleaning Discs 1-1/2” Diameter. NOTE: For best performance, operate at low speeds below 10,000 RPM, and in forward (clockwise) direction only. [COMPATIBILITY]: Compatible for use with cordless & power drills. [HOLLOW CENTER DESIGN]: Safely slides over and around wheel studs, preserving stud threads from damage during operation. [RUST & CORROSION REMOVAL]: Efficiently and quickly eliminates rust, corrosion, and debris without excessive material removal or gouging, ensuring wheel integrity. Discs will clean hub and wheel surfaces leaving mating surfaces ready for install. NOTE: For best performance, operate at low speeds below 10,000 RPM, and only in forward (clockwise) direction. [APPLICATIONS]: Specifically designed for automotive, SUV, light truck, utility trailer, UTV, and ATV use, offering quick and effective cleaning of wheel-end mating surfaces. Pads are ideal for hub cleaning and resurfacing. Package Dimensions: 7.6 x 5.71 x 1.69 inches.