Wilson 6261 Solid Bronze Jimmy Proof Deadlock Deadbolt Single Cylinder Lock With Shutter Guard, specially designed to keep unwanted intruders out. This jimmy proof is constructed of solid bronze, and it locks door to the jamb, preventing forced entry. This jimmy Proof fits doors 1-3/8" to 2-3/8" thick. The cylinder has a 5 pin brass tumbler, and it requires a 1-1/4" hole for installation. Lock includes tamper proof shutter guard, and its furnished with the flat strike keeper. Instructions and mounting screws are included.