Features:60 Feet Trolley System with 10 Feet Runner is one of the best selling Pet Trolley Systems on the market.This Trolley System is perfect for giving your pet extreme mobility while keeping them safely in sight.The Aerial Run Trolley System can provide your pet up to a full 1,200 square feet of playing area.The Trolley System comes complete with 2 strong, but light 100% steel cables measuring 60 feet and 10 feet each.Cables are vinyl covered to protect from rain and rust.The stake, cable, and swivel clips are all constructed with 100% pure steel as well for increased strength and durability.Instructions for use:- Select an area with stationary objects at both ends of the run area.- Installation height should be 6 feet or higher above the ground.- Screw the hooks into stationary objects. Attach the spring end of the trolley to one of the hooks.- Slide one of the nylon stoppers onto the cable and let it slide loosely. Slide the pulley onto the cable.- Slide the second nylon stopper onto the cable and let it slide loosely.- Loop the end of the cable through the other hook and pull it tightly.- While holding the cable tight, secure the large clamps.- Tighten the clamps. Any excess cable can be cut off.- Select the optimal location for the stops. Place a small clamp behind each stop.