Wholesale 3 Inch Red Poly Wheel Swivel 1-3/8 Inch Expanding Stem

3 Inch Red Poly Wheel Swivel 1-3/8 Inch Expanding Stem Caster Set. The listing is for a set of four (4) Service Caster Series 0 1-3/8" expanding stem swivel casters with 3" diameter by 1-1/4" wide red polyurethane wheels capable of supporting a total weight of 1,200 lbs. (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 red polyurethane 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.