Freedom Aerial Dog Runs Super Heavy Duty overhead cable with trolley, slack take up turnbuckle and termination hardware. This is one component of four total necessary to build a complete aerial dog run. The other three components are the lead line, mounting hardware for the first installation point and also mounting hardware for the second installation point. Can be purchased as a stand alone item to replace an existing overhead cable or grouped with other components to build a completely customized Freedom Aerial Dog Run that fulfills the requirements for any application. Recommended for BIG dogs between 65 and 150 pounds.