Using the DeWalt DWA2T40IR 40 Piece Impact Ready Screwdriving Set is a breeze. First, pick the right bit for your job. If you're using a 2-inch or longer bit, slide on the 10X Magnetic Screw Lock(TM) Sleeve. This will hold the screw firmly and reduce wobbling. When using an impact driver, the FlexTorq Zone in the bits will transfer torque effectively. Just make sure not to over-tighten the screws. As for maintenance, after each use, wipe the bits clean with a dry cloth. Keep them in a dry place to prevent rust. If you notice any damage to the bit tips, it's time to replace them. Enjoy using this great set for all your screwdriving needs!