The perfect set for professionals and diy enthusiasts alike the set includes everything that you need to start working with compressed air power for a variety of functions includes 1x drill chuck 10 mm including chuck key 1x rubber grinding plate 50 mm with 6 mm shank 1x rubber grinding plate 75 mm with 6 mm shank 6x 50 mm washers each 2 x coarse medium fine 6x 75 mm washers each 2 x coarse medium fine 5x grinding wheels with 6mm shaft 5x 75 mm grinding wheels 5x 75 mm buffing whe