The locks are in 3 sizes:
Sizes 12 and 16mm are on stock, the 22mm will be available soon.
They are compatible with our boom blocks. If you have copter made with it, now you can make the arms folding for better transport.
Update: All sizes are on stock!
To make payments easier, we signed agreement with European payment system: Skrill.
Now we can accept payment by Skrill Digital Wallet and by most of cards, even you don't have Skrill account.