Prevent solder joints from flowing This convenient pre-mixed
liquid shields delicate filigree work, hinges and chains from solder
flow. This non-toxic formula is precisely mixed for the best
application. Works with all non-ferrous metals. Apply directly to
previously soldered areas, hinges and moving parts with a soft brush.
Easily removed with warm water before pickling. Effective at all
temperature ranges. Non-toxic and biodegradable. Sold by weight, not
volume, and will not be full to the top when you receive it.