Belay device with cam-assisted blocking, optimized for lead climbing:
- For belaying both lead and top rope climbers
- Optimized for lead climbing, it has an integrated wheel that allows you to smoothly and quickly pay out slack to the climber
- Cam-assisted blocking for a more comfortable belay: when the climber falls or weights the system, the rope tightens, the wheel stops spinning, and the cam pivots to pinch and block the rope

Easy to use:
- Easy to install the rope with diagram engraved on the belay device
- Feeding slack and catching falls are accomplished using techniques standard to all Petzl belay devices, always keeping a hand on the brake side of the rope
- Cam-assisted blocking offers leeway for the brake-side hand position, regardless of the angle between the climber side and brake side of the rope
- Compatible with 8.5 to 11 mm dynamic single ropes and optimized for those 8.9 to 10.5 mm

Descent control:
- Ergonomic handle allows you to easily unblock the rope and lower someone
- 3:1 mechanical advantage from the handle and camming mechanism helps reduce the amount of effort needed to smoothly control the rate of descent, regardless of rope diameter

Eco-design: all plastic components, including the handle, are made with recycled nylon

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