The B-series forks with plate fixing are made of reinforced pressed steel sheet which is subsequently galvanized. The series B is suitable for manually moved loads up to 400 kg. Wheels of the DE series ELF consist of an aluminum rim onto which a high-quality, black Wicke-ELASTIC® rubber tire with a hardness of approx. 73 Shore A is directly vulcanized. The wheels are with ball bearings and electrically conductive up to R ≤ 104 Ω.