Campbell Hausfeld 2" Surface Prep Kit: * Includes two 2" 120 grit sanding discs, two 2" 80 grit sanding discs, two 2" 60 grit sanding discs, 2" medium-to-fine surface conditioning disc, 2" back-up pad and a 0.25" surface prep manual * Sandpaper discs are perfect for detail sanding work on wood, metal, cars and other surfaces * Medium-to-fine surface conditioning disc is a plastic resin fiber mixture * Use with any die grinder with a 0.25" collet and any drill with an adjusting chuck * Discs feature 1/4 turn twist-to-lock style which is interchangeable with 3M ROLOC * Max 30,000rpm