The Sponge for Soldering Bit Cleaning It’s a sponge. It keeps your Bit clean for maximum heat through put. Once you add water it instantly expands (and stays that way).Approximately 10mm thick after wetting. Long time without use will become dry, just need to add water again can be used, recycling Sponge hollow design, better cleaning electrics iron

Package Includes:

1 x Sponge for Soldering Bit Cleaning