This 4′ by 30′ Aluminum Gangway / Railing is attached to the pier with our Abutment Angle Hinge Kit. The Railing features an additional ADA Rail. The 4′ gangway roller allows the gangway end to move forward and back with the tidal shift of the dock. The 4′ Transition Plate Dock end in Gray makes the dock accessible for all. * Lagging hardware will depend on the material you are lagging into. Lag bolts are not included.