Polyurethane tyres on nylon rims, wheel x width 150 x 38 mm, fixed castor with roller bearing. Supplied = assembled. Wheel diameter = 150 mm. Structure = fixed castor. Wheel material = polyurethane (PU) Material of rim = nylon. Housing material = steel. Max. load at 4 km/h = 300 kg. Type of mounting = with top plate. Wheel width = 38 mm. Overall height = 185 mm. Wheel bearing = roller bearing. Temperature resistance = -5 C to +80 C. Screw hole diameter = 11 mm. Hub length = 50 mm. Hub bore = 15 mm. Fixed castor plate dimensions = 135x114 mm. Swivel castor plate dimensions = 135x110 mm. Screw hole spacing = 105x75 - 80 mm. Housing surface = zinc plated. Shore hardness = 92 A. On nylon rim. Extremely durable for high performance, low rolling resistance. Largely resistant against many thinned oils, greases, and chemicals. Hardness 92 Shore A. Temperature resistant from -5 C to +80 C. Swivel bearing with double ball race, swivel bearing protection.