Rubber cutting edges replace your steel edge and are used in parking lots where a squeegee type effect would be better than a steel blade. Except for the 6-1/2 foot plow all rubber edges are 1-1/2" thick for long lasting durability. They come in lengths from 78" to 120" and measure 6", 8" or 10" tall depending on the plow. Rubber cutting edges mount underneath your inverted cutting edge and can be flipped to take advantage of both edges. These extremely durable cutting edges are a must for slushy lots.