3M Hookit clean sanding low profile disc pads are firm yet flexible to provide versatility for flat sanding applications and are designed to securely hold a 3M Hookit clean sanding disc on a random orbital sander (discs sold separately). Use this disc pad with coarse grades where good leveling is needed. - Precise multi-hole pattern provides superior dust extraction to prevent loading, increase productivity and provide a cleaner work environment. 3M Hookit system provides easy disc changes and optimizes disc life.