A lockable, telescoping tube comprising: an outer tube comprising an outer tube first end and an outer tube second end opposite the outer tube first end ; an inner tube comprising an inner tube first end and an inner tube second end opposite the inner tube first end , wherein the inner tube first end is slidably-inserted into the outer tube first end ; a friction block and a pivot axis ; the friction block protruding from the upper coupler and/or the lower coupler , wherein the friction block is releasably-pressable against the inner tube ; and a pressure latch at least partially enclosing the pivot axis , wherein when the pressure latch is closed the pressure latch physically presses the friction block against the inner tube so as to restrict movement of the inner tube , and wherein when the pressure latch is open the friction block releases pressure from the inner tube thereby allowing the inner tube to slidably-move; characterized in that the lockable telescopic tube further comprises: a lower coupler external to the outer tube first end ; a shaft shield affixed to the inner tube first end via a snap-fit closure (34.2), wherein the shaft shield is slidably-inserted into both the outer tube first end and the lower coupler ; an upper coupler external to the inner tube , wherein the shaft shield is physically blocked from passing into the upper coupler , wherein the upper coupler is affixed to the lower coupler via a snap-fit closure , and wherein the upper coupler is affixed to the outer tube first end via a snap-fit closure (34.1); the pivot axis connecting the upper coupler and the lower coupler . an outer tube comprising an outer tube first end and an outer tube second end opposite the outer tube first end ; an inner tube comprising an inner tube first end and an inner tube second end opposite the inner tube first end , wherein the inner tube first end is slidably-inserted into the outer tube first end ; a friction block and a pivot axis ; the friction block protruding from the upper coupler and/or the lower coupler , wherein the friction block is releasably-pressable against the inner tube ; and a pressure latch at least partially enclosing the pivot axis , wherein when the pressure latch is closed the pressure latch physically presses the friction block against the inner tube so as to restrict movement of the inner tube , and wherein when the pressure latch is open the friction block releases pressure from the inner tube thereby allowing the inner tube to slidably-move; characterized in that the lockable telescopic tube further comprises: a lower coupler external to the outer tube first end ; a shaft shield affixed to the inner tube first end via a snap-fit closure (34.2), wherein the shaft shield is slidably-inserted into both the outer tube first end and the lower coupler ; an upper coupler external to the inner tube , wherein the shaft shield is physically blocked from passing into the upper coupler , wherein the upper coupler is affixed to the lower coupler via a snap-fit closure , and wherein the upper coupler is affixed to the outer tube first end via a snap-fit closure (34.1); the pivot axis connecting the upper coupler and the lower coupler . a lower coupler external to the outer tube first end ; a shaft shield affixed to the inner tube first end via a snap-fit closure (34.2), wherein the shaft shield is slidably-inserted into both the outer tube first end and the lower coupler ; an upper coupler external to the inner tube , wherein the shaft shield is physically blocked from passing into the upper coupler , wherein the upper coupler is affixed to the lower coupler via a snap-fit closure , and wherein the upper coupler is affixed to the outer tube first end via a snap-fit closure (34.1); the pivot axis connecting the upper coupler and the lower coupler . <EOS>