What are these for? I'm finding alot?

[Linda b]

 

[CanadianBottles]

Possibly laboratory chemicals? I've seen them before and was never certain, but I have seen that type of vial labeled for laboratory use. Not sure if they were used for anything else.

 

[bubbas dad]

just a guess but maybe pieces left over from neon light tubes.

 

[cordilleran]

The phials held assorted sizes of sewing needles for the new-fangled sewing machines.

 

[embe]

They are glass right? I could see neon tubes being a possibility. Either that or a big stash of crack pipes

 

[DeepSeaDan]

Looks like pieces of 1/2" & 3/4" copper tubing to me.