EXTREMA RATIO TK TOOL 2.0 | The TK TOOL 2.0 is the newest multi-purpose, single-piece pocket tool produced by Extrema Ratio. These are the main characteristics: - central slot to be used as a screw-pin shackle wrench. - key for of fire arm optics regulation and calibration. - bottle opener and can opener - 10 mm hexagonal screw key - 8 mm hexagonal screw key - 13 mm ring key. The front part can be used as screwdriver or lever. It comes in burnished version and stone washed version.