The Economy Volleyball Post’s simple yet sturdy steel construction and a powder coat finish make it a cost effective alternative to meet your gymnasium’s needs. The centre post is used when two side by side courts share a common net post. This volleyball post system has a 60mm (2 3? 8″) steel post to securely hold the post inside the floor socket. This system is available with an optional hand operated winch crank for tightening the net. Floor socket adapters are also available for larger size sockets.