P100 Grade. Adhesive backing allows for quick application and easy removal. Convenient disc rolls eliminate the need to remove disc liners from individual discs. Aluminum oxide mineral is durable, cuts fast and performs well on many surfaces. Strong, C Weight paper backing provides extra durability when compared to lighter weight paper backings. Load-resistant coating helps prevent premature loading of the disc surface to maximize cut and extend the life of the abrasive grains. 100 Discs Per Roll.