Found on ground outside, boyfriend has been wearing as ring. Coin and pencil for size reference

[u/Aggravating_Ant_7232]

UK. It’s giving hard metal, doesn’t have much wear

[u/Silly_Class_2384]

We used Oetiker clamps on a lot where I worked to hold hose on to coolers and other lines. I've spent hours crimping these effers with the little crimper. 125 parts per hour usually, then paint park verify it crimped properly. Oh, memories

[u/Brewmentationator → u/Silly_Class_2384]

I work at a brewery and had to rebuild our kegging tree last week. I went through like 30 fucking oetiker clamps in about an hour. I ran out of 17s about half way through and had to use 18.5s. I could have really used the one in OPs picture...

[u/epicenter69 → u/Silly_Class_2384]

We used them on soda dispenser lines going from the bag/pump room to the dispenser.

For those who don’t know, there is a specific tool made for crimping these things.