Amazon sells them. They’re awful plastic handled knifes with no other purpos beyond smuggling them past the cops and bounces. My brother thought it might be something nice to have in my wallet just in case I needed a knife but A) the design is too flimsy for long term carry and B) instant concealed weapons charge if I was ever searched by the police assuming they found it.
And the thug disappears into the crowd.
On Ebay, they’re 10 for $8, and free shipping. Must be flimsy, but still dangerous.