would anyone know what this is?

[Radar]

i found this when i was cleaning up the shop at my cousin's farm after the renters moved out. was a great deal. clean the house and shop up and i got to keep anything i wanted... lol 10 chevy carbs, 2 350's and tranny's bunch of little hand tools, compressor, and what ever these things are

 

[Tack427]

its for nipple piercing. lol

 

[avenue]

They somewhat resemble a bicycle mechanic's tool for holding tension on a cable, leaving two hands free for wrenching, while adjusting cable operated gears and brakes.

http://www.parktool.com/product/cable-stretcher-bt-2

or, some sort of crimping or dimpling tool.

 

[angus67]

i think its a ear tagger for livestock.
Me think tack427 knows more than he lets on!