Official suppler to USAV and NFHS Meets all USAV, NCAA, NFHS and FIVB specifications. High strength upright made of 3" (76mm) O.D. steel for the highest level of competitive play. Navy blue powder coated upright with chrome plated piston. Spring-loaded piston for easy adjustment regardless of competitive height. Piston rivet for easy net attachment. Requires 3" floor sleeves (not included). Ten-year limited warranty.