Using your Makita A - 96615 ImpactX 7 - Piece Torx Insert Bit Set is easy. First, pick the right bit for your job from the set. Then, insert it into your high - torque impact driver or driver - drill. These bits are great for driving screws in heavy - duty jobs like building decks, framing, or fastening metal. Just make sure to align the bit properly with the screw to get the best results. As for maintenance, keep your bits clean. After use, wipe them down to remove any debris. Also, store them in a dry place to prevent corrosion. The manganese phosphate surface helps resist corrosion, but it's still a good idea to take care of them. Avoid using excessive force that isn't necessary, as these bits are strong but can still be damaged if over - stressed. With proper use and care, your Makita bit set will serve you well for a long time.