Using the DeWalt DW5945 centering bit is a breeze. First, make sure it's properly attached to your SDS MAX core bit. This bit is great for drilling large holes in materials like concrete and rock. When using it, apply steady pressure for best results. It has low - friction, so it should drill fast. For safety, always wear protective gear like goggles. After use, clean the bit with a brush to remove any debris. Store it in a dry place to keep it in good shape. This one - piece design is durable, but still handle it carefully to avoid any accidental damage. And if you need to replace the centering bit, this DeWalt DW5945 is a perfect choice.