ES-1 is the main structural joint. Two joints allow the combination of two pipes at a right angle. ES-1 is the main assembly joint used in building many different structures....
The combination of E-2 and E-3 is used to create a right angle, to ensure that a structure is square. It is a very important, very strong joint assembly. If...
This combination of E-4 and E-2 is often used in larger assemblies where there are several sections. It ensures that all parts are square and stable. Each set contains: E-2...
