The GN 516 swivel clamp locks feature a special locking mechanism which creates a tight and vibration-proof link in the end position. Users are free to choose from three totally new operating elements, experiencing both the practical functionality and the visual attractiveness and harmony of the end product. The key has been designed for applications without operating elements. Its shape blends perfectly and harmoniously into the entire series of products. Flexibility in use, a high degree of user friendliness and ergonomics, and a consistency in design unique in the market were the prime considerations in the development of this product.