What are those caps called?

[StMarcos]

I have several gallon glass jugs that I'm looking for caps for. They were cider jugs with the 1/4-turn 'pop' lids. I spent a long time on google (anyone else notice how crappy google has become in the last few years?) with results directing me towards screw caps, like growlers. Need the 1/4-turn type. Maybe I'm just not knowing the correct term for these little bastids. Ideas?

Thanks!

 

[bottlebomber]

Those 1 gallon jugs are going to have what's called a 38-400 neck. Any 38mm cap will fit, so that's where you could start. It seems like most of the lids available are this style though.
http://www.northernbrewer.com/shop/screw-cap-for-tap-a-draft-38mm.html

 

[bottlebomber]

Lug lids. The ones you want are called lug lids.

 

[StMarcos]

Awesome. Popped up (pun?) right away!
Cheers!