This pad is for very heavy duty scrubbing and stripping. This is the most coarse grade available excepting other brand that has a product called the emerald pad.
Commonly known for stripping floor finishes and agitating floor stripping solutions around the edge while a floor scrubbing machine generally has a black round pad stripping the finish in the middle of the floor. Needs to be placed on pole frame or hand frame. 250mm x115mm x 25mm thick