The Quicksilver Screwgate has been discontinued. If you're looking for something new, check out the best locking carabiners for 2020.
Historic Range: $6.36-$8.50
The nose of the biner it's pretty big. It's clear that it's not a keylock but, more than other non-keylock carabiners, this one has the annoying habit of getting caught all the time.