digger plastic road mat 3/4 Inch for swamp ground-Source 2.5m x 1.25m x 20mm (8ft x 4ft x 3/4 inch) Anti Skid – Steel Road Plate. For use on streets and highways and the rOkaymmended standard thick Our ground protection mats made from 100% recycled high-density polyethylene (HDPE), can hold up to 100 tons and are tough enough to not break.