Petzl Micro Traxion Progress-Capture Pulley One Size. Specifications for Petzl Micro Traxion Progress-Capture Pulley: Manufacturer: Petzl Fabric/Material: Aluminum steel stainless steel nylon Weight: 3 oz Breaking Strength: 4 kN Capture Pulley Working Load Weight: 2.5 kN Capture Pulley Rope Capacity: 7 - 11 mm Pulley Type: Progress Capture Features of Petzl Micro Traxion Progress-Capture Pulley Versatile:- Designed for crevasse rescue hauling self-rescue and for use as an emergency ascender- May be used as a simple pulley by locking the cam in the raised position Very light and compact:- Only 85 g- Hole allows an SmD carabiner to be connected to the pulley with an cord making the device loss-proof High efficiency:- Sealed ball bearings provide excellent efficiency (91 percent)- Works even on frozen or muddy ropes- For use on 7 to 11 mm diameter ropes- Rope installation diagrams are engraved inside the pulley Package Contents: Petzl Micro Traxion Progress-Capture Pulley Petzl P53: Micro Traxion Progress-Capture Pulley One Size