{"product_id":"4in-8in-rigid-cart-and-platform-truck-casters-4in-x-4-1-2in-plate-300-1-250-lb","title":"4\"–8\" Rigid Cart \u0026 Platform Truck Casters, 4\" x 4-1\/2\" Plate, 300–1,250 lb","description":"\u003cp\u003eThese top plate casters are for carts, platform trucks and shelving units. Choose the options below and request a quote with the quantities you need; quantity pricing is available.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTop plate mount, 4 in x 4-1\/2 in\u003c\/li\u003e\n\u003cli\u003eChoice of wheel and bearing combinations\u003c\/li\u003e\n\u003cli\u003eZinc plated finish\u003c\/li\u003e\n\u003cli\u003eEach configuration carries its own part number\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel diameter:\u003c\/strong\u003e 4 in, 5 in, 6 in, 8 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel and bearing:\u003c\/strong\u003e Cast Iron \/ Roller Bearing, Mold-on Poly \/ Roller Bearing, Mold-on Rubber \/ Roller Bearing, Phenolic \/ Precision Ball Bearing, Phenolic \/ Delrin Bearing, Phenolic \/ Roller Bearing, Polypropylene HD \/ Precision Ball Bearing, Polypropylene HD \/ Delrin Bearing, Polypropylene HD \/ Roller 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