Features: With a metal core in the middle of the watch press mold, you can save more effort when pressing the cover. This product is a watch repair tool, a screw presser, used to press the back cover of the watch. Watch case press is equipped with 20 dies of different sizes, which can be applied to repair watches of different sizes. The product does not come with an instruction manual. If you can't operate it, you can read the instructions below. Specifications: Product color: red Product weight: 1650g Product material: ABS plastic, aluminum alloy Packing size: 24cm*13cm*11cm Mold specifications: Type 1 round mold size: 18/20mm, 21/23mm, 24/26mm, 28/30mm, 31/32mm, 33/34mm, 36/38mm, 40/42mm, 43/45mm, 48/50mm Type 2 round mold size: 16/16mm, 20/25mm Square mold size: 20mm, 25mm, 30mm, 35mm, 40mm, 45mm Shield mold size: 37mm, 45mm Instructions: 1. Choose a mold larger than the watch mirror and install it on the screw seat from under the pliers. 2. Choose another mold smaller than the back cover and install it on the upper clamp screw seat. 3. Put a watch crystal on the lower mold, you can put a cloth under the watch mirror to protect the watch mirror. 4. Put the back cover in a suitable position. 5. Press gently to complete the capping. Packing list: 1 x Watch back case press tool 20 x Dies