- metal
- Vertical keyway: made of metal, sturdy and not easy to deform, safe and , anti-corrode and anti-rust, can be for a time.
- Vertical rolling shutter: copper lock cylinder, anti- , anti-prying, , can provide higher safety performance.
- Rolling shutter door keyway: fine workmanship, simple design, easy to install, use and replace.
- Lock for roller shutter door: construct with high grade metal, not easy to break or crack in use.
- Garage door lock with keys: the anti-technical opening time is more than 270 minutes, which can scare thieves.