Spring for telescopic tubes
LOADING ZOOM 
The spring for telescopic tubes is a very easy way of connecting telescopic extensions without tools, for inner tubes with an outer diameter of 19 to 32 mm.
Description
Simply make a hole in the inner tube, compress and position the spring for telescopic tubes.
Then the second tube can be slided it over when the spring is briefly pressed together. When the outer tube is extended again, the clips takes over and ensures fastening.
