It goes without saying that our double action safety hooks feature the famous torsion spring developed by Wichard. They can be fitted using just one hand, and release when you press on the rear lever. There is a greatly reduced risk of them opening accidentally. The webbing or rope becomes lodged in the molded rubber eyelet. This product, which is both practical and offers good performance, was designed under the stringent requirements of European Standard EN 362 (for connectors).