4" x 2" Ductile Steel Wheel Kingpinless Swivel Brake Caster - 1,500 Lbs Capacity wheel-diameter-3-1/2-inch Forged steel wheels are the

Forged steel wheels are the premium of all the steel caster wheels

3" x 1-1/4" Cast Iron V-Groove Wheel - Part # LVG314

Wheel Type: Ductile Steel

For a metal wheel with similar capacities and durability

4" x 2" Ductile Steel Wheel Kingpinless Swivel Brake Caster - 1,500 Lbs Capacity wheel-diameter-3-1/2-inch Forged steel wheels are the4" x 2" Ductile Steel Wheel Kingpinless Swivel Brake Caster Part # P51042DUCTTLB Manufactured from a high strength steel alloy, ductile steel offers improved capacity, durability & impact resistance compared to standard cast iron wheels. Ductile steel provides approximately 45,000 PSI tensile strength & features a thicker tread, spokes & hubs to withstand abusive industrial applications. Its moderately crowned tread design further reduces friction