Petzl TANDEM Pulley BCA The OK is the more

The OK is the more specialized choice when symmetrical loading and device alignment are priorities

Big clear display with backlight

making for lots of seams

off-piste adventures

Petzl TANDEM Pulley BCA The OK is the morePetzl TANDEM Pulley The Petzl TANDEM is a double pulley designed for smooth and efficient Tyrolean traverses on rope. Its sheaves use self lubricating bushings, and the attachment point accepts up to three carabiners for flexible system configuration. Key specifications Reference: P21 Weight: 195 g Maximum rope diameter: 13 mm Sheave diameter: 21 mm Efficiency: 71% Maximum allowable speed: 10 m s Working load: 10 kN Breaking strength: 24 kN