Major Mfg MCE X012 "Extend A Cylinder" Mortise Cylinder Extension Kit 1 2" PowerPlex Chip: Texas ID 4D 63 Chip: Texas ID 4D 63 80 Bit 1 mm) Cylinder Key Controlled Brass Dimple Cylinder Keyway Key Controlled Pick Resistant #06 Keyway Keys Includes 5 Dimple Keys & 1 Duplication Card Cams Includes 2 Cams AR Key Controlled AdamsRite Cam and ST Key Controlled Yale Standard Cam Finish 10B Oil Rubbed Bronze Keying Keyed Alike Up To 12 KA 12 Warranty Limited Lifetime Mechanical Warranty Extension kit used to add 1 2” length to an existing mortise cylinder Note: Any two extension kits may be ganged together to add extra length when needed