Using the Bessey ClassiX GSH30 lever clamp is simple. First, open the clamp by pressing the non - slip trigger release. Place the items you want to clamp between the jaws and then close the clamp to secure them. Make sure the items are properly positioned before fully tightening. When using, be aware that although it's vibration - resistant, avoid extreme shaking or dropping. For maintenance, keep the clamp clean after each use. Wipe off any dust, debris, or moisture. You can also apply a light coat of oil to the moving parts occasionally to ensure smooth operation. This will help extend the life of your Bessey lever clamp.