"Works great with FiFi hook for solo haul system"
Works great with the Petzl FiFi hook when soloing that big wall and you want to use the sporty haul system. Downside of the sporty system is if the FiFi hook fails, the haulbag pulls you off the wall and you die.
It's alot smaller then I expected but I guess I didn't read the description carefully enough. The gate is easy enough to open and if you took a wrench to it I don't think it would open for anything less.