This kit is designed for use in installation of those ungainly but requisite knuckle coupler springs found on the KADEE type of knuckle couplers.   In my efforts to install these springs I found that by trying to hold them and (using a tool I bought to hold the spring) was still lacking in other areas of performance. I found that by mounting the coupler (as shown in the photos) I could hold it while guiding the spring onto the rear spring post and then using my thumb to pull back on the spring until it fell into place for the front spring post and then carefully releasing it to contact and carefully and slowly moving my thumb to check the installation. THE HANDLE COVERS ALLOW THE LESS THAN NIMBLE FINGERED TO PICK UP AND USE THOSE ALSO. It Works! And repeated success has been my experience. The dog leg rod is excellent for fishing, holding and installing these coupler springs, once you have installed one end of the spring you can then use the dog leg rod to compress and guide the other end onto the other spring post while keeping your thumb over the other end already installed. Your kit will include the 1-2/56 X 1/2 screw,2-fiber washers,2-metal 2/56 washers,5-2/56 nuts and 1-dog leg metal rod and the Reusable Micro Stix Adhesive Tip Applicator. Keep the glue tip applicator in the storage bag when not in use and wash your hands before attempting the procedure.lYou can make your own but it won't cost you less. The knuckle coupler and spring are not part of the kit or sale.   Why?-You may ask, do I do it this way? It gives me something to hold onto and it does not damage the surface of the coupler contact area that will rest on the face of the spring and coupler box area. Ever experience a sticking coupler? Please Note; Handles may vary in color.