Elastic solid rubber tyre, black, wheel x width 100 x 40 mm, fixed castor. Supplied = assembled. Wheel diameter = 100 mm. Structure = fixed castor. Wheel material = rubber - solid rubber - full elastic. Material of rim = aluminium. Housing material = steel. Max. load at 4 km/h = 180 kg. Type of mounting = with top plate. Wheel width = 40 mm. Overall height = 125 mm. Wheel bearing = precision ball bearing. Temperature resistance = -20 C to +70 C. Screw hole diameter = 9 mm. Hub length = 41 mm. Hub bore = 12 mm. Design of wheel rims = spoke rim. Fixed castor plate dimensions = 105x80 mm. Swivel castor plate dimensions = 105x80 mm. Screw hole spacing = 80x60 mm. Housing surface = zinc plated. Shore hardness = 70 A. On aluminium rim. Low rolling resistance, quiet running. Very smooth running, low rolling resistance. Hardness 70 Shore A. Temperature resistant from -20 C to +70 C. Vulcanised running surface. Swivel bearing with double ball race, swivel bearing protection.