Wholesale 3 Inch Semi Steel Swivel 1-3/8 Inch Expanding Stem Caster

3 Inch semi-steel Swivel 1-3/8 Inch Expanding Stem Caster with Brake. The listing is for one (1) Service Caster Series 0 1-3/8" expanding stem swivel caster with a 3" diameter by 1-1/2" wide semi-steel cast iron wheel and a posi locking brake capable of supporting 300 lbs./caster. When searching for a reliable and durable solution to your caster needs, look no further than the Service Caster Series 20 expanding stem semi-steel cast iron wheel casters. The Series 0 features an innovative expanding stem that can easily adapt to the inside diameter of the opening, allowing for a secure fit in round or square tubes. Simply tighten the topmost knurled nut to compress the rubber for a snug fit.