The cable lube tool is a great gadget! One disconeects the cable, place the cable lube gaget over the end of the cable sleeve with the wire cable sticking through it and tightened it down. Using a can of cable lube, stick the plastic tube into the provided gaget fitting and spray away. The gaget seals around the cable sleeve and the wire cable so when you spray the lube in it is forced down the sleeve around the wire. It really works great. I spray mine until whatever is coming out the other end is clean and then place a rag under the end for a bit to allow any/all excess to drain out. Now you know the cable is lubed for it's entire length. I think mine was around $10 (US) and the lube another $6-8. One can has lasted me for years, on two bikes, both with cable clutches. So 4 throttle cables, 2 clutch cables, 1 rear brake cable, all done 2X per year. Once before winter storage and again mid summer during a regular service routine.