Racatac Complete Knee Pad Assembly R1011 is compatible with all models of Racatac rollers. The Racatac Complete Knee Pad Assembly is very simple to replace and comes with instructions. Floating knee pads keep your knees from direct contact with the floor, allows you too work in shorts, and does not have straps like traditional knee pads. The RACATAC™ provides ergonomic and physical benefits that no other kneepads can offer. Originally designed for the flooring installation industry, Racatac is quickly becoming the most desired tool for all industries,which require kneeling as part of their daily work.