Using the DeWalt DWA4203B oscillating blade is easy. First, make sure your oscillating tool is turned off. Then, attach the blade to your tool - no adapter is needed because of its universal fit. When you're ready to cut, turn on the tool and guide it through the wood with nails. The brushless motor will keep a good speed, so you can make smooth cuts. As for the cutting capacity, remember the 7 - 1/4 - inch blade gives you a 2 - 9/16 - inch cutting ability at 90 degrees. Safety first! Always wear safety glasses to protect your eyes from any flying debris. Also, keep your hands away from the blade while it's moving. After using the blade, clean it with a dry cloth to remove any wood chips or dust. Store it in a dry place to prevent rust, as it's made of metal. This will help your blade last longer and keep performing well.