4" x 2" Cast Iron Wheel Kingpinless Rigid Caster - 900 Lbs Capacity wheel-caster 3-1/4" x 2" Cast Iron

3-1/4" x 2" Cast Iron Wheel Swivel Caster - Part # VMH320SS64S

Swivel Construction: Double Ball Raceway - 5/8" Kingpin

Swivel Construction: Double Ball Raceway - Kingpin (w/ Dust Cover)

5" x 2" Cast Iron V-Groove Wheel Swivel Caster - Part # 146VIRB520S

4" x 2" Cast Iron Wheel Kingpinless Rigid Caster - 900 Lbs Capacity wheel-caster 3-1/4" x 2" Cast Iron4" x 2" Cast Iron Wheel Kingpinless Rigid Caster Part # P50042CIRB Cast iron is the industry standard metal caster wheel used across a wide range of heavy duty applications. This wheel differs from traditional cast iron designs because it is classified as semi steel. With reduced carbon content & additional steel blended into the casting, it delivers improved capacities, strength, durability & impact resistance compared to standard cast iron wheels.