Mammut Crag Light Belay Device
Here's what other sites are saying:
The Mammut Crag Light Belay Device is based on the tube principle and is suitable for double, half and single ropes from 7.5 to 10.5 mm in diameter. The V-shaped grooves permit controlled retention of drops even at low manual force as well as controlled lowering of the climber.
Show up to the first day of belay class with the Mammut Crag Light Belay Device. The Tube principle and V-shaped grooves give you great control while you learn the difference between a dynamic catch and a static one. We're sure your climbing partner will appreciate that lesson.