B-POTH fixed sheet steel castor, wheel x width 125 x 40 mm, max. load 250 kg. Supplied = assembled. Wheel diameter = 125 mm. Structure = fixed castor. Wheel material = polyurethane. Material of rim = nylon. Max. load at 4 km/h = 250 kg. Type of mounting = with top plate. Wheel width = 40 mm. Overall height = 150 mm. Wheel bearing = ball bearing. Fixed castor plate dimensions = 100x85 mm. Sheet steel, electrolytically zinc plated, blue passivated, Cr6 free. Tread: high quality thermoplastic polyurethane (TPU) , non-marking, non-staining. Wheel body: high quality nylon 6, does not break, natural white. Very high chemical resistance to many aggressive media. Temperature resistance: -20 C to +70 C, reduced max. load above +35 C. Fixed sheet steel castor, medium duty model, with mounting plate. Wheel with thermoplastic polyurethane tread, with heavy nylon wheel body, with plastic thread guard.