Cylinder ASSA's new standard cylinder ASSA d12 is built on innovative patented technologies, and is the biggest upgrade of ASSA cylinder technology for villas and holiday homes since 1947. ASSA d12ASSA d12 is a patented cylinder series for high frequency… Do you want to create a safe lock environment? ASSA OEM has created "The lock guide by ASSA OEM", and it's made to give you knowledge and tips about approved lock sets. We really encouring poeple to read our tips and guidelines here: The lock guide Want to download our product catalogues? If you prefer to download our product catalogue - you can download it here! We also provide instructions, declarations and other documents in our download documents section.Check it out!