Rubber polishing cylinders used for jewellery making Helps polish metals or prepare metal for polishing by deburring Great tools for beginner jewellers Cylinder size = 24mm height x 6.3mm diameter Suitable for standard rotary tools You will receive one box of 400 polishing wheels There are four different options available - please select from the drop-down menu: White = very fine grit for gloss finishing Green = fine grit for pre-polishing Red = medium grit for light scratch removal Blue = coarse grit for smoothing and refining edges and surfaces