Demmeler quick release skewers offer crucial advantages. Though the use of the knee lever principle, the clamping arm opens far enough to fully expose the work piece so it can be easily removed from or inserted into the fixture. The clamping arm with clamping screw is moved to the work piece with only a small rotation of the clamping lever. The expenditure of energy on the lever is multiplied several times over on the clamping arm. This makes quick release skewers ergonomic and safe to handle. In recurring processes, the pneumatic toggle clamps are ideal for quick clamping. They are easy to transport and can therefore be adapted quickly to changing tasks.