This is a BFS753R Wool Polishing Pad. 7.5" diameter 100% wool, 4-ply twisted. Heavy cutting, center ring wool pads. Instant centering achieves vibration-free buffing with less fatique & a better result. Along with the centering benefit we have shaped the front of the pad with a hex design. The hex face will help dissipate polish or compounds evenly, mininizing grabbing & reducing heat while the backing plate helps reduce pad stiffness.