Features: Tool set includes a watch box opener and eighteen interchangeable clamps. It is a general key to open and close the watch case. It is adjustable and can be easily adjusted to fit various box sizes (the maximum diameter is 55mm). Made from premium steel, it is sturdy, durable and maintains the look of a professional instrument. Comes with a box for easy storage and transport. Specification: Material: steel. Item Model: 5320 Colour: as shown in images. Size: approx. 14 x 5 cm / 5.51 x 1.97 inches. Weight: 288g Type: watch tool repair kits Package List: 1 x Watch Box Opener 18 x Clamp Note: Please note that the new type and old type of this product will be sent at random, and make sure you do not mind before ordering.