This self braking descender for single rope is one of the most popular devices for cave descents worldwide.It offers exceptional control and versatility, while the self braking function facilitates on-rope manoevures, making it easy to stop and maintain your position on the rope.The device can be rapidly installed or removed from the rope without disconnecting it from the harness. Can also be used to ascend short distances with the addition of an ascender and footloopWeight: 326g for use with single ropes between 9 and 12mm in diameter