This kit comes with 2"50mm components and benefits from having smaller components allow you to work on smaller areas and being able to get close to the edge and right into the corners of the glass. However if damage is on easy access area (such as windows, glass tables, fish tanks...) we recommend you to use our 3"75mm kit. Product Contains:Instructions1 x 2" 50mm Velcro Backing Pad (with drill attachment)2 x 2" 50mm Rayon Felt Polishing Pads50ml Fine Glass Polishing compound (cerium oxide concentrated) Polishing J Cloth Please Note :If you can feel the scratches with your fingernail it is probably too deep to recover with this kit and different product might be required. Also please remember glass is a very hard surface so polishing process might be time consuming (average polishing process takes about 1hr), in some cases more then one attempted might be necessary. Please Contact us if you need assist.