You are buying 100g (3.5oz) of High Quality Solder Flux Paste

This is not the cheap Vaseline being passed off as Flux like sellers from China!!!

Helps solder adhere to metal surface during soldering, electronic contacts or copper pipes in plumbing.

Also great for cleaning your solder iron tips.

SHIPS FAST FROM USA AND WE PROVIDE A TRACKING NUMBER!

Also available in 30g here:  https://www.ebay.com/itm/233625351697