Segal 667F (15326) Jimmy Proof Deadlock Segal Single Cylinder Bronze US10 Finish, Comes with flat strike. Shutter Guard for extra security - prohibits tampering with the lock if the outer cylinder is compromised. Solid High Strength Bronze Alloy - for the ultimate security and durability. Hardened drill point screws. comes with solid bronze case bolt flat strike, solid brass cylinder, 5 pin SE1 keyway With recessed cylinder collar, Boxed.