Using this BORA 8 - piece parallel clamp set is a breeze. First, select the appropriate size of clamp according to your project. For cabinetry, the lengths in this set are just right. Adjust the clamping jaws easily with the large, comfortable - grip handle. Place the padded jaws on the material you want to clamp, and they'll apply even pressure without damaging it. The clamp blocks are very useful. You can slide the clamp bar into the perpendicular channels of the blocks to keep it stable. When you're done using the clamps, you can mount the blocks on a wall to store the clamps neatly. As for maintenance, after each use, wipe the clamps clean to prevent dust and debris from affecting their performance. Check the padded jaws regularly for any signs of wear. If they're damaged, consider replacing them to ensure the clamps continue to work well. Also, keep the clamps in a dry place to avoid rusting.