Wilson, 6251B, Brass, Jimmy Proof Deadlock Deadbolt Single Cylinder Lock. This jimmy resistant deadlock is constructed from die cast and comes finished in brass. It features a single cylinder design that is ideal for doors with glass panes. It requires a 1-1/4" hole and includes a tamper resistant shutter guard. Jimmy Proof Deadlock, 4-5/16", Diecast, Brass. Locks door to jamb to prevent forced entry. 5 pin tumbler brass rim cylinder. Requires a 1-1/4" hole. Includes tamper proof shutter guard. Material: Diecast. Color: Brass. Cylinder: Single. Position of Keyway: Segal. Door Thickness: 1-3/8" to 2-3/8". Furnished with flat strike keeper.