The FR-5H is an efficient and user - friendly tool designed for quickly removing and installing 12 - spline Shimano or SRAM style cassette lockrings, along with similar lockrings on rotor discs. It's a modified version of the FR - 5, which means you can use it without having to remove most quick - release skewer nuts. The removable, threaded steel handle allows for easy replacement of a worn or damaged head.
Using this cassette lockring tool is straightforward. First, make sure your bike is stable. Place the tool on the cassette lockring or the similar lockring on the rotor disc. You don't need to remove most quick - release skewer nuts before using it. Just turn the handle to either remove or install the lockring. When it comes to maintenance, keep the tool clean after each use. Wipe off any dirt or grease. If the head gets worn or damaged, you can easily replace it because the handle is removable and threaded. Store it in a dry place to prevent rusting. Also, don't use excessive force as it might damage the tool or the lockring.
