Nylon wheel, sheet steel housing, wheel x width 125 x 50 mm, 2+ items, swivel castor. Supplied = assembled. Wheel diameter = 125 mm. Structure = swivel castor. Wheel material = plastic - nylon. Material of rim = nylon PA6. Housing material = steel. Max. load at 4 km/h = 500 kg. Type of mounting = with top plate. Wheel width = 50 mm. Overall height = 170 mm. Wheel bearing = double ball bearing. Temperature resistance = -40 C to +80 C. Swivel castor offset = 54 mm. 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. High maximum load. Non marking, low roll resistance. Weather resistant, can also be used outdoors. Temperature resistant from -40 C to +80 C. Reinforced housing made of sheet steel, electrolytically zinc plated in blue. Swivel bearing with dual turntable bearing. Double ball bearing.