This ramp edge fits one side of a 3' x 3' 24/Seven LockSafe ergonomic mat, offering a finished appearance and allowing easy rolling of dollies and carts on and off the mat. Positive interlocking connections mean the edge attaches firmly, but not permanently, so you can roll up a section of matting for floor maintenance without the time-intensive process of putting it back together. The rubber compound is grease resistant and suitable for wet or dry areas.