This credit card is really a knife. Just putting that out there in case it wasn't coming across already. It's a 2.2mm thick, 85.6mm x 54mm CNC machined aluminum treat. Keep it in your wallet to impress your friends and gore your enemies!
We've been horrified and amazed by the CardSharp once before (in its first iteration), but the CardSharp 4 has a number of improvements. First of all the whole body is made of aluminum now, not just the 65mm blade, so you don't have to worry about plastic wearing out or cracking.