Petzl GriGri2 Belay Device | North American Rescue
Petzl Grigri Belay Device | Aerial Adventure Tech
Amazon.com : PETZL GRIGRI Belay Device - Belay Device with Cam-Assisted Blocking for Sport, Trad, and Top-Rope Climbing - Blue : Sports & Outdoors
REVERSO®, Versatile, lightweight belay/rappel device, for use with one or two rope strands and ability to belay a second climber from the anchor - Petzl USA
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GRIGRI®, Belay device with cam-assisted blocking - Petzl USA