This blade disposal box (aka sharps box) is made to accept standard utility blades, snap blades, and single edged razor blades. All very useful for doing work out in the shop. The cross cut shows that the blades will not easily fall out. Keep adding till the box is full and toss without worrying about someone getting hurt on old rusty blades.
I tried to color the text with ink and sharpie, but it didn't turn out well.