More surprising than that bullet knives exist is that they are sold in boxes of 12. Just how many bullet knives does one need? Are they like disposable razors? Good for 3 or 4 rounds of...uh...slashing and stabbing things, and then too dull to produce a clean and close cut. Don't be cheap now. Throw them out when it's time. The last thing you want is to attack someone with an overused bullet knife and doom him to a day of walking around with pieces of blood-soaked Kleenex stuck to his wounds.