Using the Makita Inner Flange 224378-9 is a breeze. First, make sure you have a select Makita 4 - 1/2', 5', 6', or 7' Angle Grinder. Then, attach the inner flange quickly and easily. You can then connect non - hubbed accessories to your grinder. When using, always follow the safety instructions of your angle grinder. For maintenance, keep it clean after each use. Wipe off any dust or debris. Store it in a dry place to prevent rust. This will help ensure it lasts a long time and continues to work well for your projects.