Keys Category A (ASSA 308) Explanation Keys to the ASSA 308 Features / Function Key length: 60mm Keys Category E (ASSA 1926)Keys to the ASSA 1926 Lever Units Category B & G (ASSA 704/709, 713, 733, 1713, 1733 etc.)Lever Units Category B & G is made for ASSA 704, 713, etc… Keys Category C/D (ASSA 1919, 1920, 1924, 1925, etc.)Keys to the ASSA 1919, and others. 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!