Wheels of the serie PE are made of a one-piece aluminum die cast wheel centre with a vulcanized polyurethane Wicke – Topthane® 92 Shore A tyre. The Topthane® tyre is bonded to the wheel centre with a special bonding agent. The tyre is abrasion resistant with low starting and rolling resistance. The tyre is cut proof and has good tear strength. The wheels are with ball bearings.