Freedom Aerial Dog Runs Super Heavy Duty steel with clear vinyl coating replacement lead line for BIG dogs ranging in weight between 65 and 150 pounds. This is one component of four total necessary to build a complete aerial dog run. The other three components are the overhead cable, the mounting hardware for the first installation point and mounting hardware for the second installation point. Can be purchased as a stand-alone item to replace an existing lead line 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.