1. Cerium oxide is the best polishing compound for glass scratches due to its reaction. 2. Easy to use, just mix with water and apply to the glass surface with the polishing felt to easily restore scratched windows, tabletops, windshields, glass, shower screens, windscreens, aquariums, even car headlights to like-new condition. Product Description Name: 8pcs Polishing Kit Pad Max RPM: 12000 Suggested instructions for using Cerium Oxide: (1) Necessary supplies: 1. Cerium Oxide 2. Water (Some recommend distilled water) 3. Polishing wheel 4. Drill 5. Small plastic tubs (Pint or quart size) 6. Spray paint: white Material: felt Package Contents: 1 x 120g cerium oxide 1 x 2cm felt polishing wheel 1 x 3cm felt polishing wheel 1 x 3inch felt polishing wheel pad 1 x 8mm drill adapter 3 x 3inch diameter polishing pad Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.