Iain Sinclair’s Cardsharp2 is no ordinary knife, as it folds up flat like a credit card when not in use. Unlike similar products, this model is thinner and lighter, due to its use of 420 series surgical stainless steel. Don’t let its slim design fool you, this knife is sharp enough to easily cut through an automobile safety belt in an emergency. You can pick one up for just $2.80 shipped here. Continue reading for a video review and additional information.
This gadget was originally designed as a lightweight surgical knife that can be easily transported and safely disposed of by hospitals and medical centers together with paramedics and aid workers throughout the world (without needing expensive and wasteful sharps containers). Its unique surgical blade technology features an extra long 65mm cutting edge that ensures longer lasting sharpness (conventional utility knife blade edge is only 25mm long). A good test for Cardsharp is to carefully cut through a tennis ball or two inch foam which is more difficult using a normal carton knife. More information.