Penn Elcom R0828/06 Steel Rack Rail for Mounting Audio, Home Theatre, Recording Studio, PA Equipment, IT, One Pair Tapped and Thredded for 10/32 UNF, M5 or M6, 6 Rack Spaces (6U) Material: 3.0mm / 1/8" Steel Full hole rack rail, Tapped for 10/32 UNF, M5 or M6 Black powder coated 6 rack spaces