ISC D4 Descender Rated for 2 person rescue without a supplementary brake. The operator can tail the rope over the nose of the device or the traditional side wave to give 2 different friction rates through the device. Certificates: EN12841, ANSI Z359, NFPA 1983- meets the requirements of EN341. It has a 5kN slip load and is rated to a maximum operator weight of 240kg.
