With respect to the old model, the following improvements have been made:
- The length of the 9mm thick part has been reduced from 30 to 20mm, this allows the handle pin to fit better in narrower doors.
- Imbus screw is provided with thread locking agent, the imbus screw "does not run away because of this."
- Packaged individually in a larger box making it easier to stack in your stash.
Due to this product modification, the model numbers are changing. Model KSG1A becomes model KSG1C and model KSG2A becomes model KSG2C.