Name that part

I’m missing this from my order (UGH, 1st part missing and already contacted about missing screws, etc). Anyhow, what is this part so I know what I am talking about? Drag chain extrusion?

Thanks

Do you have a picture of the female end so I can see if that is missing as well?

Yes. I am missing both of these.

you can find the part numbers here. Measure your chain so you know which one you need.
it looks like there are three to choose from 20-30-40mm inside width. all of them are listed as 15mm inside height.
https://www.inventables.com/technologies/drag-chain

Yeah, I was SURE I was missing the part, but they are attached already.

Same here, I looked for a plastic bag with them for hours, then low and behold they are already on the chain.