Polyurethane tyre, brown, on nylon rim, wheel x width 125 x 50 mm, fixed castor. Supplied = assembled. Wheel diameter = 125 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 = 50 mm. Overall height = 164 mm. Wheel bearing = double ball bearing. Temperature resistance = -20 C to +80 C. Screw hole diameter = 12 mm. Hub length = 60 mm. Hub bore = 20 mm. Fixed castor plate dimensions = 135x110 mm. Swivel castor plate dimensions = 135x110 mm. Screw hole spacing = 105x84/76 mm. Housing surface = zinc plated by galvanization. Shore hardness = 93 - 95 A. Do not damage floors, non-marking. High max. loads, quiet running. Hardness 93 - 95 Shore A. Temperature resistant from -20 C to +80 C. Sheet steel housing, electrolytically zinc plated in blue. Swivel bearing with dual turntable bearing. Small plastic thread guard. Double ball bearings.