Pressed steel fixed castor, medium duty brackets, with top plate fitting, Nylon wheelBracket: Made of pressed steel. Bolted wheel axle. Zinc-plated, blue-passivated, Cr6-free.Wheels: Tyre & running tread: Made of high-quality, impact-resistant nylon. Color: natural white, Shore: 70° Shore DHigh chemical resistance to many aggressive substances. Operating temperature: -25° C to +80° C. At ambient temperatures above +35° C the load capacity is reduced. Maintenance-free under standard conditions.