This is useful scaffolding item for building construction.
In the case of Ringlock, their durability is very excellent.
So, It is often used to build skyscrapers globally.
Ringlock consists of a largely three main components;
Standard(Vertical), Ledger(Horizontal), and Brace(Diagonal).
The advantage of Ringlock is easy to assemble and disassemble.
And, it also has high flexibility to lock using pin from different angle.
So, it is also used to make or repair unique structures something like a
Big ship or power plant etc.