Petzl Rescue Pulley Black Small. Specifications for Petzl Rescue Pulley: Manufacturer: Petzl Fabric/Material: Aluminum side plates aluminum sheave with ball bearings Breaking Strength: 36 kN Pulley Type: Single Features of Petzl Rescue Pulley For rescue professionals Designed to handle heavy loads or for intensive use Large diameter sheave mounted on sealed ball bearings for excellent efficiency Accepts up to three carabiners to facilitate use Package Contents: Petzl Rescue Pulley Petzl P050AA01: Rescue Pulley Black Small