Shark 13211 Rolock Back-Up Sanding Pad 4?

A precision Rolock backing pad from Shark’s abrasive accessories line, the Shark 13211 is a 4-inch pad built for secure disc mounting and consistent torque transfer. Designed for use with Rolock (twist-lock) discs, it’s ideal for high-speed grinding or sanding applications and helps reduce chatter while promoting proper disc support.