1. MATERIALS: This screw extractor is made of GCR15 tool steel. hardness, after strict process setting, polishing, with hardness and , long service life, and easy to remove damaged screws. 2. HAS MANY USES: Screw peeling machine kit with different sizes can meet your shopping needs. Can be used for home maintenance, office maintenance, etc. Can be widely used for home, telecommunications, automobile or mechanical maintenance work. 3. WIDE APPLICABILITY: Suitable for screws or bolts of any size, suitable for removing various damaged head bolts and screws. Suitable for wood and machine screws as well as PH, flat head, hexagonal or painted screws. Strong applicability, convenient for your use. 4. EASY TO USE: Designed to easily remove screws and bolts. It is simple and laborsaving, providing you with convenience, which is an important part of every toolbox. Save a certain amount of time for your work and improve your work efficiency.