Metro 13UPBL Super Erecta Steel Shelf Mobile Post, 14-1/2" Height x 1" Diameter, Black (Pack of 4) Post fits 14-1/2" high stationary wire shelving unit (not included) Made of steel for strength Black finish for resistance to corrosion Grooved at 1" intervals to help guide installation of shelves (not included) at desired height Accommodates stem casters (not included)