Using the DeWalt DW2219IRB nut drivers is a breeze. Just insert the nut driver into your impact driver or wrench. Thanks to its 20 - degree pivot, you can easily reach those hard - to - access spots. When using it on flat surfaces, the recessed corners will help reduce shavings. As for the industrial - strength magnet, it'll keep the nut driver firmly in place. When you're done using the nut drivers, wipe them down with a clean, dry cloth to keep them in good condition. Avoid using them with excessive force as it might damage the tool. Also, store them in a dry place to prevent rusting. With proper use and care, these nut drivers will serve you well for a long time.