Sharps disposal container

A sharps disposal for razor blades and other removeable blades. There is a small slit on the front to see how full the box is getting without allowing anything to slip out. Ridges under the lid prevent blades from sitting flat so they cannot easily come back out and help with making sure the lid properly prints. I put a a single blade and then a few blades in and shook upside down for a while with nothing coming out.