The SIRIUS combines the advantages of the best descent devices for industrial and rescue applications in an extremely compact design, providing better ease of use and long-lasting durability. The SIRIUS fits perfectly in your hand. Its self-locking handle has a particularly small range of movement, which allows you to work quickly and precisely and therefore offers more comfortable and safer handling. During rope loading, which is intuitive and simple, the carabiner on your harness can remain attached to the device. We designed the rope path to protect the rope from twisting and excessive wear. The SIRIUS has been developed for continuous use in the most demanding conditions. For this reason it is made entirely of metal, with no delicate plastic parts. SIRIUS. Superior ease of use and exceptional durability in its most compact form. Sirius and Spark – The Differences at a Glance