To use this Wera L - key set, simply pick the right L - key for the TORX® socket screw you're working with. Insert it into the screw head and turn it in the appropriate direction to tighten or loosen. When working, make sure to keep a firm grip on the plastic sleeve for better control. For storage, use the clip to keep all the keys together in one place. Avoid using these keys on screws that are too large or small for them, as this may damage the keys or the screws. To maintain the set, wipe the keys with a dry cloth after each use. If they get dirty, you can wash them gently with mild soap and water and dry them thoroughly. This will help keep the BlackLaser surface treatment effective and ensure the keys last a long time.