The Neox Belay Device from Petzl is optimised for lead climbing and has an integrated wheel so you can smoothly pay out slack to the climber. This device is also equipped with cam-assisted blocking to pinch the rope in place should the climber fall or add weight to the rope._Whether you're scaling a rocky cliff face or practising your technique at your local gym, this Belay Device is a must for your next expedition._Cam-assisted blockingErgonomic handleIntegrated wheel systemEngraved rope installation diagramSingle rope compatibility: 8.5 - 11mm (optimised for 8.9 - 10.5mm)Weight: 230gMaterial: stainless steel, aluminium, recycled nylon_