The Petzl GriGri is an active assisted braking device that has long been the gold-standard for this genre, seen at crags and gyms all over the world. In
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Grigri Plus+ climbing braking belay device
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Petzl GriGri Review
Belay device with assisted braking, for a broad range of single rope diameters (8.5 to 11 mm).
Grigri
Belay device with assisted braking and anti-panic handle, for all single rope diameters (8.5 to 11 mm)., The GRIGRI + is an assisted braking device
Grigri +
Petzl GriGri Review