This double hangrail ballet bar is constructed of heavy duty 1 1/4" diameter plumbing pipe in anthracite grey finish. It includes four 3" casters, 2 locking and 2 non-locking. Each rail adjusts independently from 50" to 78" high. The PipeLine collection is a uniquely designed merchandising collection based on the industrial grade clothing racks popularized in New York's garment district. This stylized and refined version incorporates interconnecting plumbing pipes and connectors.