Long lasting carbon steel design: constructed from carbon steel to withstand frequent use and provide reliable performance for automotive tasks. thread precision: engineered with precise threads to minimize the risk of damaging wiper arms or hoods during removal, delivering smooth operation every time. Easy to use: tighten the knurled cone and turn the center screw to lift clamps effortlessly; no extra tools required. Must have for mechanics: ideal for removing bolted on wiper arms that fit over tapered splines; suitable for both professionals and DIYers. Use scenarios: In a professional , use for removing bolted on wiper arms that fit over tapered splines during maintenance or replacement. In a home garage, use for DIY wiper arm removal and vehicle maintenance. On site or in a field service setting, use for quick, controlled wiper arm removal without risking damage to adjacent components.