This is a 6.5 inches long knife style case opener with a beveled blade edge at each end to fit under the edge of your watch case and open it. You can hold the watch works between the two hand tightened holders, and there is print on the back to measure in both us standard and metric, for a length of 2 inches,(5 mm)

* 6.5 inches long watch case opener has dual beveled edges and 2 turning holders

* Knife edge and flat edge to open many types of watch cases with ease

* 2 turning holders make for a hands free experience and easier repair - turn to fit most cases

* Measurements on the back are in both SAE and metric - precision quality for even intricate repair

* Measures up to 2 inches with a dual metric measurement of 5 MM