They allow to assemble tubes in a telescopic and/or modular way.
Nylon lever clamps for quick closing on telescopic poles with 1.5 mm tubes. wall. They allow tubes to be folded into each other with very good grip and independently adjustable through stainless steel screws.
Nylon clamps for telescopic poles with 1 mm tubes wall. They allow to fold some tubes inside others with very good support. Conical twist tightening system.