Just a small tool to cut insect nets after they have been attached to a window. It's normally pretty hard to get a straight and neat cut when using a knife or scissors, because you have to cut inside a corner. But with this tool it was super easy, I was surprised how well it worked.

You need a scalpel/hobby knife blade - don't use a crappy old one, it should be as sharp as possible. The two halves are joined with a few drops of glue. Print on the flat side.

See last image for blade dimensions in mm.