5x Automatic Wire Squeegee Spring Insulation Pulling Tool for Crimpers[Material]: steel spring. Steel spring with high strength, high tension and strong breaking.[High plasticity]: Automatic stripping of insulation from wires ensures even distribution, even force, stable elasticity and effectively increases work efficiency.[Easy to Use]: Simply push the spring into the center of the spring and then pull it out. is ready to use in seconds.[Prepared ]: Be prepared both at work and outside, thanks to the large amount of storage space for rescue equipment, two-way communication and other items.[Application]: Spare pull springs are widely used in various applications, e.g. at home, office, garage and other places.Specification:Material: stal stainlessSize Chart:2 cm 0.79 inchThe package includes:5 spare pullers