This makes shimmering a cylinder open without lock key easy. If the shim stop moving, remove control key and put in a regular key to move the shim forward. Then reinstall the control key.
Rating: [5 of 5 Stars!]
By
RT7765 BOB
Date: April 04, 2021
Worked like a charm and functions perfectly. Just copy from an original control key on your key machine and you are good to go.