HEAVY DUTY DOG TIE OUT CABLE The Aerial Run Trolley System comes with a 100 ft dog tie out cable and a 10ft dog runner zipline which are vinyl covered to protect from rain and rust durable and long lasting for large dogs up to 125 lbs. Turnbuckle is included to avoid sagging and help pulley run smoothly along the cable.ANTI-SHOCK DOG RUNNER LINEThe shock absorbing spring is located on the runner lead instead of the cable help your dog reduce the tension more directly to avoid injury give your pe