Heat-resistant pressed steel swivel caster with top plate fitting. Cast iron wheel. Bracket: Made of pressed steel, with double ball bearing in the swivel head, with heat resistant swivel head seals. The special Blickle dynamic riveting process of the swivel head results in smooth rolling characteristics, increased service life and the swivel head play is set specifically for high temperature applications, with special heat-resistant grease. Bolted wheel axle. Zinc-plated, blue-passivated, Cr6-free.