This device is easily and quickly installed anywhere along an approved anchorage (rail). The rail Slider™ anchorage connector will move along the rail, pulled by the worker's lanyard/harness. No unhooking and re-hooking of the lanyard is required when changing work locations. The rail slider consists of a pair of rail profile plates, which interlock via a set of receiving bolts. A lanyard is attached to an approved carabiner securing the profile plates to the crown of the rail.