GP23005 Windshield Scratch Repair DIY Kit, Glass Polishing, Windshield Polishing - Removes wiper blade damage, surface marks and scratches This is a DIY Version of Professional GP-WIZ Glass Scratch Repair System, Removes scratches, wiper blade damage, surface marks, water damage of automotive glass, Designed to be used with electric drill with 1500-2000rpm, Ideal for DIY Repairs Can be used on any type of glass including toughened and laminated glass. Comes with easy to follow instructions with pictures,