123 Block 3rd Hand Adapter

Handy little adapter for attaching coolant tube style soldering 3rd hands to 123 machinists blocks to create an even more handy 3rd hand tool. If you aren't familiar with 123 blocks then you should check out Adam Savages tested video on these things. I can't say I've used them as intended but they are a super versatile tool to have in a makers kit.

Essentially this is just a 1/2" -20 UNF female (coolant tube) to 3/8"-16 male (123 block) adapter. I've included a version with a long sectio