Standard 1-inch Length , Standard 1-5/32" Diameter Mortise Cylinder Sets Fit Adams Rite, Kawneer, Vistawall, & Most other Storefront Door Locksets SC1 Keys (5 Pin C keyway) Adams Rite Cam Includes 4 Keyed Lock Cylinder & 8 Keys , 4 Cylinder collars Keyed Alike For use with commercial Store Front Deadbolt, Hook Lock, and Deadlatch in Glass Doors with narrow aluminum Frame Mortise Cylinder in Aluminum features a 5 pin "C" keyway. Threaded to screw into mortise lock body. Features a Standard 1-5/32-Inch Diameter and 1-inch length. The lock cylinders have adams rite cam for use with Kawneer, Adams Rite, and most other storefront locks. NOTE: IF YOUR LOCK IS NOT THREADING IN, TRY LOOSENING THE LOCK BODY MOUNTING SCREWS.