Wholesale 3.5 Inch SS Black Poly Swivel 1-3/8 Inch Expanding Stem

3.5 Inch SS Black Poly Swivel 1-3/8 Inch Expanding Stem Caster Set with Brake. Listing is for a set of four (4) Service Caster Series #20 1-3/8" expanding stem stainless steel swivel casters with 3-1/2" diameter by 1-1/4" wide black polyurethane wheels and top locking brakes 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 black polyurethane wheel casters. The Series #20 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.