1. Strong bracket: 5mm thickness fork with 2 side welding 2. Good glue for the tire and rim, steady 3. Soild strong stem INFORD CASTER provides good quality and steady caster for scaffolding work platform. We use import high enhance grease between the tire and the rim, strong bracket with 2 sides welding and soild strong stem in order to protect workers and due to good zinc plating, our caster ...