Industries Double Star Threaded Caster Insert Heat Treated Steel Fits 1 Inch Round 16-18 Gauge Tube Thread: 3/8-16 100 Pack

These steel threaded metal caster inserts are specifically engineered to be inserted into round legs, providing a deep setting that remains securely in place. They feature a 3/8-16 thread, typically used with correspondingly stemmed casters, and flush fittings offer a neat, straightforward finish. Designed to fit into 1-inch round tubes (outside dimension) of various gauges (16 to 18 gauge). They enable casters to smoothly roll over thresholds, extension cords, and more without becoming dislodged, suitable for industrial, commercial, and residential settings. Constructed from heat-treated hardened steel for enhanced durability when correctly installed