1.Zinc plating to resist rust and corrosion. 2.High quality caster,competitive price. 3.load up to 2500kg for th 12"

caster diameter	caster width	load capacity	material	setting height		radius of rotation
100MM	50MM	800KG	iron-core polyurethane	170mm		125mm
100mm	50mm	1500kg	steel	170mm		125mm
125mm	50mm	800kg	iron-core polyurethane	190mm		130mm
125mm	50mm	1500kg	steel	190mm		130mm
150mm	50mm	800kg	iron-core polyurethane	210mm		146mm
150mm	50mm	1000kg	steel	210mm		146mm
200mm	50mm	1000kg	iron-core polyurethane	260mm		171mm
200mm	50mm	2000kg	steel	260mm		171mm
250mm	65mm	1000kg	iron-core polyurethane	285mm		190mm
250mm	50mm	1100kg	iron-core polyurethane	285mm		190mm
250mm	50mm	2000kg	steel	285mm		190mm
300mm	50mm	1500kg	iron-core polyurethane	310mm		325mm
300mm	50mm	2500kg	steel	310mm		325mm

heavy-duty iron-core Polyurethane caster