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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 have excellent performance in construction circumstance. Scaffolding caster, double ball bearing, an advanced design,eliminating kingpin. 2 brake pedals for easily on/off operation. The scaffold caster features a zinc passivated steel frame that in conjunction ensure rigidity and a long working life.Old-field certification. Different spec. of pulg stem including ball spring structure. Double Precision ball bearing; Wheel: 98°A Strong PU on PP. Perfect design, when rigid, there is 0 off-set, the largest range to protect workers and have the biggest load capacity.