Since the invention of stainless braided rubber hose, racers and mechanics have been fighting the problem of installing it into the socket part of the assembly. If your lucky and get a clean cut on the end of that hose, you might get it in. Most of the time a little fuzz appears on the hose end and the battle begins. It is not only time consuming, it can get bloody. KOUL tools has delivered a solution that makes the assembly a snap. Manufactured of a high tech composite, it is virtually indestructible. No need to worry about vise marks or wearing out. Just insert the socket into the tool, twist the hose in, and in less than 10 seconds you have it assembled. You can repeat this several times without recutting the hose end. The tool can pay for itself the first time you don't have to scrap some hose because it got too short trying to clean up the end. You'll be amazed at the amount of time you'll save. After using this tool, you will say to yourself, "KOUL". Koul Tool Fits 10-12-16 Hose Ends Fits -10, -12, -16 Hose Ends. This handy composite device makes installing the socket over the cut end of the stainless hose a breeze. Simply open the clamshell, insert the socket, clamp the Koul Tool in a vise, or secure with Vise-Grip pliers. Push the hose through the opening with a twisting motion, and the hard part of hose assembly is done. Three sizes in a box, and they fit all brands of A-N fittings. Pit Stop USA offers Koul Tools AN Hose Assembly Kit - Fits -10 -12 -16 Hose Ends 900511 at low everyday prices. Be sure to check out all our products from Koul Tools including Koul Tools AN Hose Assembly Tools and AN Hose Assembly Tool Kits.