The Horn can be fitted on any Grivel ice tool to provide a comfortable platform for leashless climbing. The Horn is easily attached to your Grivel tools. Just pull off your leash and experience the freedom of movement, easy matching and quick gear placing that leashless tools allow. This is a great way to try out leashless climbing without dropping hundreds of dollars on a new set of tools. The Horn is meant to support body weight only and is not to be used as part of an anchor system.