Here's what other sites are saying:
The Tandem Pulley from Petzl is designed for smooth and efficient Tyrolean traverses on rope.
The Tandem Double Pulley from Petzl is designed for smooth and efficient Tyrolean traverses on rope.
Petzl Tandem Double Inline Pulley Petzls Tandem climbing pulley is the ideal pulley for tyrolean traverses It does not twist on the rope It is also excellent for many pulley systems It features fixed sides and selflubricating bearingsWorking Strength 2 x 225kNBreaking Load 24kNWeight 195gNote that this item of climbing safety equipment is nonreturnable Please call us toll free at 8772368428 or email bentgatebentgatecom with any questions
Fixed sides and self-lubricating bearings, ideal for use with rope clamp/grabs and OK or AmD carabiners from the PETZL range.