Using your DeWalt DWA4204 oscillating tool blade is a breeze. First, make sure your oscillating tool is turned off and unplugged. Then, attach the blade to the tool following the manufacturer's instructions. Since it has a universal fit, it should attach easily to all major brands of oscillating tools without an adapter. When you're ready to cut, hold the tool firmly and start with a slow speed to get a feel for the cut. This blade is great for cutting wood with nails, but be careful as hitting nails can be tough on the blade. After use, clean the blade with a dry cloth to remove any dust or debris. Store it in a dry place to prevent rusting. If you notice the blade getting dull, it's time to replace it for optimal performance.