Key benefits - Improved design with a single-use bearing insert speeds up the process of tightening or loosening propeller nuts, reducing effort and saving time. - 4-in-1 functionality: supports 5 mm and 2.0 mm internal hex screws, offering versatility for common RC applications. - Advanced bearing cartridge delivers smooth operation and reliable performance every time you use it. - Compatibility: specifically developed for racing motor hex nuts, providing dependable, repeatable results for RC enthusiasts. Why you need it - Speed up maintenance: tighten or remove propeller nuts quickly without damage to components. - Versatility: one tool covers multiple hex sizes found in RC setups, reducing the need for several tools. - Consistent performance: the single-use bearing insert maintains smooth operation across uses, improving reliability. 2-3 practical use scenarios - Fast propeller nut installation/removal on RC airplanes or drones that use 5 mm or 2.0 mm hex hardware. - Routine maintenance or field repairs on RC cars, boats, or aircraft where hex nuts on motors or props require quick servicing. - Race-day adjustments in pits to quickly re-torque hex nuts on racing motors, minimizing downtime between runs. Consistent with product design - Built to support racing motor hex nuts with dependable performance for RC enthusiasts. - Maintains the intended function, compatibility with 5 mm and 2.0 mm hex screws, and the performance expectations set by the original design.