This 200' cat fence conversion kit for existing fences comes with everything that you need to convert 200 feet of wooden fence into a large outdoor play area for cats. Attach the overhang extenders to any structure over 5' to provide your cats with instant freedom. 4' feet of strong poly fencing is stretched between the extenders and attached with zip ties. Secure the lower portion of the poly fencing to your existing fence to give your pets the safety and exercise they deserve. **TO ATTACH TO A DECORATIVE METAL OR CHAIN LINK FENCE, YOU WILL REQUIRE U-BOLTS THAT ARE NOT INCLUDED IN THIS KIT. THEY CAN BE PURCHASED FROM YOUR LOCAL HARDWARE STORE**