For added security, further compress the rubber with a wrench via the nut under the swivel raceway.
Service Caster is unsurpassed in quality, reliability, and excellent customer service. 5 Inch SS Gray Poly Swivel 1-1/4 Inch Expanding Stem Caster Total Lock Brake SCC This versatile caster is ideal for work tables, shop projects, or any equipment with round or square tube legs. 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. Simply tighten the topmost knurled nut to compress the rubber for a snug fit.