Mechanical Movement Cufflinks Watch Automatic Durable Quality Repair Tools Parts. [Anti Oxidation] The alloy material is durable and not easily deformed, can effectively resist oxidation and rust, and has a long service life. [Automation] Automated movement, so you don’t have to worry about its battery life. [Small and Convenient] Small and convenient, convenient to store and carry, and convenient to transport at the same time. [Use] Mechanical watch movement is one of professional watch repair tools, suitable for repairers and amateurs, saving you expensive repair costs. [Hollow Design] Simple and easy to use, exquisite watch repair parts, hollow design, make it more design sense. Size: The Maximum Length of the Movement Approx. 36mm / 1.4in, the Diameter of the Movement Approx. 29mm / 1.1in, the Length of the Handle Approx. 18mm / 0.7in (Manual measurement, there is a little error). Purpose: Replacement of Watch Movement. Manual measurement, there is a little error. 1 x Plastic Storage Box.