SIRIUS is Skylotecs first self-locking descender specially designed for all kind of rope-based access work, e.g. industrial climbing, height rescue or rope work for arborists and building cleaners. SIRIUS combines all the advantages of the best descenders and offers outstanding handling and long service life with its extremely compact design. The device lies perfectly in your hand. Its auto-returning operation lever has a particularly small radius of motion so that you can work noticeably faster and more accurately - and therefore more comfortably and safely.