1. Gary Bowen says

    Nice and clear and thorough… thank you.

  2. Nick Vito Bovino says

    Hi, what 3AL stands for? i have an 1985 luxfer with probably 5 dives and i cant tell if it as the 6351 alloy, scuba shop is telling me to discard it but its like new, how can I be sure? Thanks

  3. GetBackLife says

    Very informative. Thank you.

  4. ZDG says

    more scuba videos!

Leave A Reply

Your email address will not be published.