Camp Matik Descender A revolutionary belay-descender device with assisted braking that delivers amazing safety and control. Gradual camming action helps reduce the impact force of a fall and decreases wear and tear on the rope Anti-Panic system automatically blocks the rope if the user loses control of the descent Double-hinged lever and straight rope path make the descent feel very fluid and controlled Intuitive design eliminates the possibility of clipping a carabiner to the device if it is not completely closed Wide attachment hole allows the carabiner to rotate through the hole High-end manufacturing with hot-forged aluminum main body and precision-cast stainless steel for the critical components that come in contact with the rope For single dynamic ropes from 8.6 to 10.2 mm Weight: 276g / 9.7 oz Minimum Rope Diameter: Single 8.6mm / Single 0.34" Maximum Rope Diameter: 10.2mm