Fits in a standard wallet like a credit card. Has 11 functions, including can opener, bottle cap opener, four-position wrench, two-position wrench, butterfly screw wrench, direction ancillary wrench, knife edge, saw blade, screwdriver, ruler, and keychain hole (for easy attachment onto your gear).
Promising review: “These fit perfectly in your wallet or pocket and have gotten me out of a jam many times. There are 11 functions this card can perform and I have used eight of them so far with positive results. Whether it’s opening a box, tightening a screw, or opening a bottle or can, this is a nice tool to have around. I bought these as gifts for everyone in my family and they all love them. No matter what your daily routine is, there will be a time when one or more of the tools functions will come in handy. I keep one in my pocket and one in my car at all times. It is always good to be prepared. These make a great gifts and you can’t beat the price.” —Dana Bradley
Get them from Amazon for $8.99.