Using the Makita 224399-1 Inner Flange is a breeze. First, make sure your Makita Angle Grinder is turned off and unplugged. Then, simply install the inner flange onto the appropriate part of the grinder. It should fit and install quickly. When using accessories without hubs, this flange allows you to attach them securely. As for maintenance, keep it clean from dust and debris. After each use, wipe it down with a dry cloth. Store it in a dry place to prevent rusting. Be careful not to drop or damage it, as this could affect its performance. And always double - check the compatibility with your specific Makita Angle Grinder model before use.