And what are they used for?  I found a bunch of them at the lake. 

 

PS humans leaving trash behind truly suck.  

 

https://ibb.co/F5Ssb43

I’ve seen those for sale before,  no clue as to their purpose 

Looks like a Tru-Turn hook if I had to guess, albeit a bit rusty.  Lots of models available, some specifically for bass. Designed to rotate in a fishes mouth for better hookups. You can Texas-rig with larger sized ones just like any other worm hook.

^^^this^^^

Tru-Turn worm hook.

Tom

Thanks, much appreciated.  I’m definitely a Gama in-line circles guy so I’ll probably just toss these. 

 

Someone left a huge ball of line with these hooks entangled.  Trashy.