The Storus® Smart Multi-Functional Tool™ is small but mighty. It is the size of a credit card (3 3/8 inches long by 2 1/8 inches wide) and has over 15 functions. It fits into any Storus wallet. The Multi-Functional Tool can perform the following functions: Box Opener Ruler (in Inches) Key Ring Hole Lanyard Protractor Wing Nut Spanner Fish Scaler Wire Stripper Scraper Screw Driver Ruler (in Centimeters) Can Opener File Wood Saw Bottle Opener 4 Position Wrench Butterfly Wrench Knife Edge Color: stainless steel Measures: 3.375 inches long x 2.125 wide.