Feature:1. Stable Base: Watch back tool with 4 threaded holes in the base, with good stability, which allows you can easily repair your watch. 2. Prevent Slipping: Watch tool adopted a textured handle design, effectively preventing slip, which is easy and comfortable to use. 3. 12 Dies: Equipped with 12pcs fitting dies, with different sizes, which are suitable for most watches, and can fit your watch ly. 4. Easy Operation: Watch case closer is an essential tool for watchmakers, easy to operate, and allow you can repair your watch by yourself. 5. Excellent Nylon: Watch back case closer adopt high quality nylon material, sturdy and , which not damage your watches. Specification: Item Type: Watch Back Set Dies Type: 12pcs, 18/20, 21/23, 24/26, 28/30, 31/32, 33/34, 36/38, 40/42, 44/46, 48/52, a flat die and a butterflies die Colour:blue Material:plastic Package Contents: 1 x Watch Back Tool 12 x Dies Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.