The simple functioning of the lightweight SK1 rope grab provides optimal movement of the device on the semi-static Boa lanyard and immediately locks in the event of a fall. A fixed device, it can only be inserted onto the lanyard at one end, it cannot be fitted or removed at any other point on the lanyard. The following kits are available for this device: SK1 kit 10m: 100308900006 SK1 kit 20m: 100308900007 SK1 kit 30m: 100308900008 SK1 kit 40m: 100308900035 SK1 kit 50m: 100308900036