Shop Tuff STF-03RSC 3" Steel Rigid Caster Measures 3" in diameter and is 1.45" wide; has a large capacity of 1000 lbs., perfect for your heavy loads Constructed of 40 degree, heavy-duty steel and especially designed for your heaviest loads, these steel casters will not develop a flat spot Excel in extreme temperatures and are resistant to chemicals for a durable caster Work well on concrete and other hard surfaces with easy mobility for your convenience Ideal for material handling, building or repairing carts, creating portable displays, and moving heavy furniture or equipment; 1 year limited Manufacturer's parts warranty