The 8 pin Ace (aka "tubular") pick is a precision tool designed to easily open any standard 8 pin center Ace-type lock. Tubular locks are more sophisticated than standard pin tumbler locks. Tubular locks are high security pin tumbler locks arranged on a circular plane. One of the big differences between a tubular lock and a conventional pin tumbler lock is that all of the pins on a tubular lock are exposed to the eye. That doesn't mean a tubular lock is easier to pick, quite to the contrary. The pick used for this lock is the tubular cylinder pick. You need the right tools and time to pick a tubular lock. If you're new to the trade it would be wise for you to learn about tubular locks by purchasing a tubular training lock as well as some instructional material that covers the basics of picking a tubular lock.