Threaded Insert - Compatible Outside Tube Diameter - 20.0 mm | 0.787 in ; Insert Height - 20.0 mm | 0.787 in

Polished black Round Tube Insert & Glide with internal threads to accommodate brackets and adjustable levelling feet. It is designed to be inserted into round or tubular tubing, such as chair legs or sofa bases. Its metal thread allows for smooth and repeatable adjustment. Made of HDPE material.