10mm Rubber Edging Bar For Rubber Tiles Our rubber edging bar is not just an accessories, it is a edging bar that has been used for safety purpose. It’s wedge-shaped is a useful solution to help avoid a trip hazard.  The square tiles are high density and cause risk of tripping on the straight floor edge. Using rubber edging mats eliminate a trip hazard on the soft rubber floor, which is necessary if the tiles surrounding it don’t have a concrete curb.