Telescopic structural support

A telescopic push-pull prop for construction industry, the push-pull prop comprising:

• an outer tube having a free end, a web and an inner thread disposed at an axial separation from said free end, said inner thread having a first inner thread section and a second inner thread section separated from said first inner thread section by said web, said web thereby extending in an axial direction of said outer tube between said first and said second inner thread sections, wherein said free end of said outer tube comprises an edge section having a pass-through cross-section that is reduced with respect to a nominal width of said outer tube;
• and
• at least one threaded rod or threaded inner tube disposed in said outer tube for axial adjustment therein, said inner tube having an outer thread which engages with said first and said second inner thread sections of said outer tube.