Using these Metabo Flapper Plus discs is easy. First, make sure your tool has an arbor size of 5/8 - 11. Then, attach the disc to your grinder. You can use it for blending and finishing in one step on steel - stainless and heat - sensitive materials. The disc's trimmable feature allows you to adjust it according to your needs. When using, keep in mind that it can get hot, so take breaks to avoid overheating. For maintenance, store the discs in a dry place away from direct sunlight. After each use, clean the disc gently to remove any debris. With proper use and care, these discs will last a long time and give you great results.