Pin Rails are used in shelves or counters. These are available in both 5' & 7'(152.5cm & 213.5cm) lengths with matching corners. These are also used to insert belaying pins to tie-off rope rigging. The pin rail is made of 3-1/2″ pipe with holes for belaying pins on 12″ centers supported by 4″ channel legs. Double pin rails have two pipes so that non-moving pieces may be tied off to one pipe and the other is used for the active sets. Sand bags are used to counterbalance the load.