Using your Klein Tools 32556 bit holders is easy. First, make sure your screwdriver is clean and dry. Then, simply insert the bit holder into the appropriate slot on your Klein 10-in-1, 11-in-1, or 10-Fold Screwdriver. When you're done using the bit holders, take them out and store them in a dry place. To keep them in good condition, clean them regularly with a soft cloth. Avoid using them with excessive force, as this can damage the bit holders. Also, don't expose them to extreme temperatures or moisture. If you notice any signs of wear or damage, it's best to replace the bit holders.