Sand-Light Sait-Lok blending discs have an all-metal attachment on the disc to ensure a secure fit to the backing pad. These discs offer less aggressive cutting than traditional surface conditioning discs. Use the slowest speed possible for optimum results. Discs are available in two grades: Medium (Brown) for minor finishing and blending applications, and Very Fine (White) for final finishing prior to buffing with compounds. Use backing pad 95167 (medium density) or 95267 (hard density). Used for aluminum, ferrous and non-ferrous metals, and stainless steel. Package of 50.