Polyolefin

Expansion stem casters are designed to mount casters into open tubing fixtures. Turning of hex nut beneath the lower raceway on the caster expands the  rubber adapter inside of the round or square tubing for a tight fit. There are various stem sizes available which individually have a range of  tubing sizes the stem will fit into.

Polyolefin wheels are a low cost when with high durability and resilience. Polyolefin wheels hold up great in wet environments since they have a high resistance to liquids, chemicals and greases. These wheels have a high abrasion resistance tolerance and are extraordinarily resistant to impacts and heavy shocks.