Steel competition volleyball system a traditional design with unmatched strength for all levels of volleyball play. Durable 3" O.D. telescopic steel post for competition regulation games provide unyielding strength and support. Sleek black powder coat finish. features hassle free net height adjustment with our oin lock mechanism designed to quickly set the net to men's, women's, and juniors heights. Engraved markings on telescopic post indicate height. Internal spring system keeps telescopic post from free falling inside the base post when the pin lock is removed. Pully at top of the post easily glides the net cable over the post to the ratchet winch for tensioning. Meets USVBA, NCAA, and NFHS competition specifications.