It can be used with Ø 8.6 ÷ 10.5 mm single ropes. It is compact and lightweight and allows for belaying a leader and belaying a top-roping climber with both hands handling the rope, or for lowering the climber.Allows for quick and smooth paying out of the ropeAllows the belayer to arrest a fall holding with the hand the free end of the ropeThe climber can be lowered off with a slight pressure on the device, keeping under tension the rope free end with the other handOptimized and suitable for Ø 8.6 ÷ 10.5 mm single ropesIf the rope is incorrectly installed in the device (the rope sides are inverted), thanks to the specific tapered (V-shaped) friction notches, effective belaying is still ensured, with safe braking and easy lowering of the climberWeight: 115g