Compression Sleeve Puller Tool removes leaking compression sleeves without damaging wall,pulls the nut of pipe,make a ferrule very simple. Fitments:Ferrule Puller for 1/2inch water compression sleeve 1/2inch tubing only. Compression Rings Removal Tool is crafted from wear resistant metal. Need of replacing a quarter a sink toilet that compression fittings,this ferrule puller tool is very helpful.precisions tool. Especially you donot have enough to cut old compression fittings,this Compression Sleeve Puller will remove old compression rings and reform the previously curled tube back.