It is impossible to pick this lock using the visible keyhole. You have to know the secret of revealing the true keyhole before you can attempt to compromise it. Even then, the four-lever mechanism is not easy to pick.
Weighing 3/4 lb, this is a sturdy lock with a solid brass body, 3/16" thick steel reinforcing plates on the front and back, and a 3/8" diameter steel hasp. Measures 3 3/4" high by 2 1/4" wide.
Instructions for revealing the hidden keyhole are included. Comes with three keys.