What is this tube piece???

[Sucram]

Hi, I am trying to identify what the bended hose / tube pieces are on this MOC. 

[Rustinidiel]

if you zoom the pic, you can see what you try to identify is not one piece... but 2 hoses, one with little diameter, and a pneumatic hose for the part with diameter bigger... the proof is on the right side of that mix of parts... he used the same pneumatic hose... ofcourse the designer had cut the hoses to obtain the length wanted...

i hope this helps you

[Sucram]

Yes but they are actual LEGO pieces surely.

[ukbajadave]

As @Rustinidiel says the thicker one is this Pneumatic hose cut to length 

The thinner is something like This rigid hose

So yes they are Lego pieces. The shape probably comes from a stiff wire through the middle or heating and bending.