Snagle Paw Dog Runner for Yard,Heavy Duty Trolley System for Large Dogs,Dog Tie Out Run Cable,Dog Zip line 100ft with 10ft Pulley Runner Line for Dogs Up to 250lbs for Yard or CampingHEAVY 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 250 lbs. Turnbuckle is included to avoid sagging and help pulley run smoothly along the cable ANTI SHOCK DOG RUNNER LINE: The shock absorbing spring is located on the runner lead instead of the cable, help your dog reduce the