Single Cylinder Bolt Interlocking Deadbolt With Double Cylinder, Locks Door To Jamb To Prevent Forced Entry, 5 Pin Tumbler Locking Cylinder, Requires A 1-1/4" Hole, Includes Tamper Resistant Shutter Guard, Uses An Axxess Key #67 Or Equivalent Weiser Blank WR2 Or WR3, Uses True Value Keyblank #321-067 Or Ilco Keyblank #182-550.