Using the Bosch ITDEV2503 Impact Tough bits is easy. Just select the appropriate bit from the set and insert it into your impact driver. Make sure it fits securely. When using, apply steady pressure and let the impact driver do the work. To ensure the longevity of the bits, avoid over-tightening screws. If you encounter excessive resistance, stop and check for any obstructions. For maintenance, keep the bits clean and dry. You can use a soft cloth to wipe them down after each use. Store the bit set in a dry place, preferably in the original case or a toolbox to prevent damage. With proper use and care, these bits will serve you well for a long time.