Petzl VERSO Belay/Rappel Device. D19R. $26.95. Petl's lightest belay/rappel device with adaptive rope control (ARC) technology. The VERSO is a simplified version of the REVERSO. The asymmetrical V-shaped grooved friction channels adapt the friction for better control using their ARC technology.

-Ultra-light design:
    -hot-forged aluminum
    -weight: 57 g
-Single device for all ropes:
    -single ropes ≥ 8.9 mm
    -half ropes ≥ 8 mm
    -twin ropes ≥ 7.5mm
-ARC technology adapts to the diameter of the rope used by increasing or decreasing the braking friction on the rope according to its diameter and condition
-Increased friction on thinner ropes
-Adapted friction for efficiency with large diameter ropes
-Asymmetrical grooved sidewalls decrease friction when taking in slack for greater ease of use
-Super compact design is easy to use and doesn't take up much space on your rack
-Rope friendly design separates the two strands of rope when belaying with half/twin ropes or while rappelling, thus helping to prevent kinks
-Stiff keeper caple will not get sucked into the device and keeps it in the optimal position while also helping to prevent dropping the device
-Usage diagram engraved on device for ease of use
-Use with symmetrical shaped locking carabiners to maximize efficency no matter which end is closest to the device

For use on:
Single ropes ≥ 8.9 mm
Half ropes ≥ 8 mm, twin ropes ≥ 7.5 mm

Weight: 57 g