1.Cerium Oxide is the best polishing to glass scratch because the chemical and reaction.2.Easy to use,just mix with water and apply to the glass surface with the polishing felt to lightly scratched windows, , tabletops, windshields,glass , shower screens, windscreens, fish tanks, even car headlights to like-new condition.Product descriptionName: 8pcs Polishing KitPad Max RPM:12000Suggested Instructions for Use of Cerium Oxide:(1)Supplies Needed:1.Cerium Oxide2.Water (Some recommend distilled water)3.Polishing Wheel4.Electric Drill5.Small Plastic Tubs (Pint or quart size)6.Spray colour: white: feltPackage Contents:1 x 120g cerium oxide 1 x 2cm felt polishing wheel1 x 3cm felt polishing wheel1 x 3inch felt polishing wheel pad1 x 8mm drill bit adapter3 x 3inch diameter polishing padOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.