The steel threaded metal caster inserts are specifically designed to be inserted into Square legs/posts and offer a deep setting that will stay securely in place.
Features a 5/16-18 thread that is commonly used with correspondingly stemmed casters and flush fittings offer a clean and simple finish.
Designed to fit in 1-1/2 Inch Square tube (outside dimension) of multiple gauges (16 to 18 gauge).
Allows casters to easily roll over thresholds, extension cords and more without being displaced and can be used in industrial, commercial and residential environments.
Manufactured from a heat treated hardened steel that provides extra durability when properly installed.