Specification Brand : Service Caster Color : Swivel - No Brake - Black Label : Service Caster Manufacturer : Service Caster MaterialType : Polyurethane Tread on Polyolefin Core Model : Series #20 PartNumber : SCC-TS20S414-PPUB-BLK-381615 ProductGroup : BISS ProductTypeName : INDUSTRIAL_WHEELS Publisher : Service Caster Size : 4" Wheel SmallImage_Height : 75 SmallImage_URL : http://ecx.images-amazon.com/images/I/41KBk10vwZL._SL75_.jpg SmallImage_Width : 75 Studio : Service Caster Title : Black Polyurethane Swivel Threaded Stem Caster w/4" x 1.25" Wheel and 3/8" Stem - 300 lbs Capacity/Caster - Service Caster Brand