Are these welding rods?

[ipoduke]

I have a bunch of these hollow rods in different sizes. Are they for welding?
It was bunched together with welding items at an estate sale.

Thanks!

[J. D.]

Not real sure since it has been a long time since I worked with divers, but I think that is a cutting electrode for under water use. Takes a special stinger with oxygen pumped through the rod and requires around 5 or 6 hundred amps to operate under water.

[ipoduke]

Not real sure since it has been a long time since I worked with divers, but I think that is a cutting electrode for under water use. Takes a special stinger with oxygen pumped through the rod and requires around 5 or 6 hundred amps to operate under water.

omg, really?
not planning on doing any underwater welding in the future!

thanks!