These heavy-duty casters are durable and designed for use in the most demanding environments. Non-marking rubber tread and corrosion-resistant zinc finish. High capacity and durability, ideal for extreme operating temperatures. Powered iron, compacted and sintered to cast-iron strength, makes smooth tread. California residentssee Prop 65 WARNINGS Maximum load capacity is 247 lbs. Wheel diameter of 4-1/32 in. (102 mm) Total height of 4-31/32 in. (126 mm) Tread width of 1-5/16 in. (33.5 mm) Fixed fastening type Plate mounting type Made of sintered iron Product finish is metal Recommended for use on following surfaces: asphalt, wood/planking, steel, concrete Resistant to extreme cold, extreme heat, petroleum products Mounting plate dimensions: 77 mm x 156 mm Features Item Weight 3.8000 Twin wheel No Load capacity per caster (lb.) 247 Lockable No Casters Product Type Plate Returnable 180-Day Swivel/Rigid Rigid Builders Hardware Product Type Casters Brakes No Finish Metal Color Family Metallics Color Metal Wheel Material Metal Features Heavy Duty Package Quantity 1 Wheel Diameter (in.) 4.02 Plate Width (in.) 3.03149606299213 Product Height (in.) 4.96 Plate Height (in.) 6.14173228346457 Wheel Width (in.) 1.32 Product Width (in.) 1.32 Product Depth (in.) 4.02 Manufacturer Warranty LIMITED 1 YEAR WARRANTY