Carton Opener KhakiMidori's Carton Opener Khaki features a pocket sized, round resin case that flips open to reveal a rust resistant ceramic blad inside. At an angle, the blade smoothly cuts through cardboard boxes and held with the flat edge down, it allows you to cut through single sheets of paperperfect for unboxing or opening envelopes. As the blade grows dull, it can be reversed to use a fresh point for cutting, or replaced entirely with the refill. At Misc Store