When concrete floors have been polished certain agents are used to protect or harden the surface for longevity. The Grind N Shine technique of using a ride-on or pedestrian trowel uses circular velcro discs which allow the user to quickly change from either: grinding discs, diamond resin polishing discs or in this case to attach a floor pad to evenly apply liquid agents.
The Red floor Pad, firmly attaches to the velcro and is typically purchased in quantities of four to cover each velcro disc.