12mm plus m traction nubs on both sides (18mm total) WEIGHT: 36kg . MATERIAL: Virgin high-density polyethylene (HDPE) LOUR: Black . CAPACITY: Up to 60 tonnes on ha rd, flat ground. Load capacity varies depending on ground nditions. TRACTION: Heavy duty hex-tread traction pattern for strong grip on both sides . HANDHOLDS: 4 easy carry