iwiss f1807 copper ring crimping tool kit for 3/8,1/2,3/4,1-inch- free removal tool& pex pipe cutter&gauge- for all us f1807 standards iwiss f1807 american standards with interchangeable jaw set 3/8,1/2,3/4-inch, the tool itself is 1-inch with crimp ring removal tool ,which used to remove 1/2-inch to 1-inch cable ring with go/no-go gauge and spanner suitable for narrow space and pipe maintenance tough plastic tool kit helps you keep track of all your crimping tools tool sets used to fasten pex pipe to brass or poly fittings using copper crimp rings includes: 1-inch crimping tool with three interchangeable jaws 3/8,1/2,3/4-inch 1* copper ring removal tool 1* pex pipe cutter 1* go no go gauge 1* wrench 1* suitcase