This set contains 8 pads, each 2 1/4" x 3 1/4" in size. Theses pads are a 20mm ogee contour and are ergonomically designed with a foam rubber backer which helps eliminate fatigue during long periods of use. The set comes with 5 electroplated pads:- 60 grit - 120 grit - 220 grit - 400 grit - 800 gritIt also contains 3 resin bonded pads:- 500 grit - 1000 grit - 7500 gritThe metal bond pads will minimize and eliminate scratches followed by resin bond to bring out the full polish of your material. This set is perfect for the professional doing touch-ups or the do-it-yourselfer who doesn't want to spend hundreds or even thousands of dollars on tools and polishing discs and tools.