3" x 1-1/4" Cast Iron V-Groove Wheel Swivel Caster - 350 Lbs Capacity 20-50 This caster features an all-steel

This caster features an all-steel top lock brake that performs well in a wide range of applications

6" x 2" Ductile Steel Wheel ES Swivel Brake Caster - Part # 2B6ES12X329

Wheel Diameter:3-1/4"

Ductile steel is a combination of alloys that provide a much higher weight capacity than cast iron wheels

3" x 1-1/4" Cast Iron V-Groove Wheel Swivel Caster - 350 Lbs Capacity 20-50 This caster features an all-steel3" x 1 1 4" Cast Iron V Groove Wheel Swivel Caster Part # Q523001VG V groove wheels are designed to guide equipment by rolling on inverted angle iron track, however, they can also operate while not on a track thanks to the tread on either side of the v groove. The cast iron wheel offers a strong, resilient, cost effective solution for heavy loads. If more capacity is needed, check out the larger sizes or the heavier duty ducitle steel and forged steel