Manufactured from a heat treated hardened steel that provides extra durability when properly installed. 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. These inserts are available in a variety of popular sizes and fit 16-18 gauge (approximately 1/16 to 1/8 walls). Very cute boots, fit great and my daughter loves them. The zippers on the side make for easy on/off at her age too. Helpful 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... Outwate 2-1/2-in ubbe Swivel Caste The edges of the connector fit flush to the outside edge of the tubing for a clean, finished appearance. The square double star caster inserts are specially designed to sit deep in the tube allowing equipped items to roll over thresholds, extension cords, cracks in the floors and more without fear of the connector slipping out. Our double star connectors work with any quality caster such as Outwater's extensive line of threaded wheel casters. Allows casters to easily roll over thresholds, extension cords and more without being displaced and can be used in industrial, commercial and residential environments. Threaded Tube Inserts Outwater Industries Double Star Threaded Caster Insert | Heat Treated Steel | Fits 3/4 Inch Square 16-18 Gauge Tube | Thread Square Threaded Insert
