3kg charge

3kg explosive charge. The original was made of zinc and used stickers over the fuse wells to allow it to be used underwater.

This design comes with 2 models, one hollow to be filled with sand, and one solid.

The fuse wells have a snug fit, but it is recommended to use super glue to keep them secure.

The lid for the hollow version should have a tight fit to prevent any sand from spilling out, but glue can help keep it permanently secured.