DBI-SALA® Trolley Anchorage Connector is attachable anywhere along beam including midpoints. Model #2103143 fits 3" to 8" flange width thickness up to 11/16". Dual adjustment dials are fixed to trolley for precise alignment in 1/8" increments and trolley guards protect the wheels from damage and keeps beam clear of debris. This Trolley Anchorage Connector glides effortlessly along the beam and provides horizontal mobility and fall protection. It is easy to install and operate, and combines light weight and high strength (5,000 lb min. tensile strength). Meets or exceeds all applicable industry standards including OSHA, ANSI and the stringent ANSI Z359.