The Duck from STec is like a Petzl Shunt on steroids!
For those old school rope access technicians that were trained on the Shunt this is the back up device of choice.
Made entirely from stainless steel ( excluding cam for the red alloy cam version) this will outlast religion.
The tow rope is pre-stitched in and just too short to tie an extension onto.
The STec Duck is a rock solid, reliable, rope access back up device that will provide years of service.