CompX C8712 Bright Nickel US14 Mailbox Lock With Threaded Cylinder And Clip, specially designed to replace Bommer style locks. This cylinder requires a 0.635" x 0.760" mounting hole. This lock features a 5 pin tumbler, it fits doors 3/32" inches thick, the body is 7/8" inches long, and the cam swings counter clockwise sticking out 13/16" inches from the cylinder.