No Damage To Walls & Copper & Supply Lines:This ferrule puller removes leaking compression sleeves without damaging walls, which effortlessly pulls the nut and ferral off of the pipe. This compression sleeve puller removes 1/2-inch copper water compression sleeve. If you are in need of replacing a quarter turn valve on a dishwasher, sink or toilet that has compression fittings, buy this tool and make your life easy. Designed by plumbing professionals. Precision machined plumbing tool. Not Need To Cut Off The PipeSaves a lot of time around cutting old pipes. Re-designed bullet nose will not pull off and is easy to use in relatively tight spots. Especially if you don't have sufficient exposed copper to cut off the old compression fitting, this angle stop puller will effortlessly remove the old compression ring and reform the previously crimped copper pipe back to a perfect circle. No damage to the copper. Makes removing a ferrule simple, and makes plumbing work simple. Work On Corroded & FrozenEven such as the existing valve was severely corroded or frozen, you can turn the lever to extract the old compression sleeve from the pipe. Easy and fast solve the problem of compression valves failing with small leaks. Fully machined body and screw, this ferrule puller is durable, corrosion resistant & wear resistant. 2 Ways To RemoveRemove the old compression fitting or the old angle stop.WAY 1: ONLY REMOVE THE FERRULE---Let the ferrule in between the red notched end of the tool (notched clamping ferrule). WAY 2: BOTH REMOVE THE COMPRESSION NUT AND FERRULE---Place red notched end of tool behind compression nut. And then both way1 or way2 all need to: Engage the silver head end in tubing. Hold tool firmly while turning the t-bar handle, the puller tool will automatically pull compression nut and ferrule.