Fuction: Black and Green can do Buff and Wax. Deep red and Orange can do Heavy cut. Yellow can do Light cut. Specifications: Material: Sponge. Form: roundness. Diameter：50mm/2in Thicknes：25-32mm/1-1.18in. Color: yellow/black/green/orange/deep red. Backer Plate Size: M6. Package List: 1 x Flat Polishing Buff Pad Set(16PCS).