The Climbing Technology Acles DX is a lightweight alloy caving descender designed for single ropes, ideal for speleology applications. It features a spring lock lever that allows the rope to be inserted without removing the harness carabiner, enabling modulation of descent speed by holding or feeding the free end of the rope. The hole on the lower plate allows the placement of a friction carabiner directly on the device. The descender is suitable for single ropes with diameters between 9 and 12 mm and weighs approximately 252 grams. It is individually tested and made in Italy.