Using these T - 31 Anchor T - Bolt Bits is easy. First, select the appropriate bit size according to your project requirements. Make sure your power tool is compatible with the 3/8″ shank of the bit. When using the bit on stone, apply moderate pressure and let the bit do the work. Avoid using excessive force as it may damage the bit or the stone. After use, clean the bit with a soft brush to remove any stone dust. Store the bits in a dry place to prevent rust. If you notice any signs of wear, it's time to replace the bit for the best results.