There’s always been a cult surrounding really high-end knives, and Bob Kramer’s are really high-end — they’re known to run $10K or more, and they’ve even been profiled in The New Yorker. So what, you say? Well, it turns out having a custom-made, insanely expensive knife will at least let you pull off some neat party tricks. Witness this video of Bob Kramer in action, shaving arm hair, cutting paper, and slicing a Coke can in half. Then again, can Kramer’s knife halve a nail before tearing apart a pineapple? Or split a log before handling your most delicate chopping? All for the low, low price of $19.99? We’re gonna stick with our Ginsu set. [PopSci]