Note: The size of the mold on the glass side must be the same size as the edge of the glass. If it is too large or small, the glass be crushed. Desktop pressure meter back cover device, this cover device can meet the needs of general watch repairers, watch lovers and other watch lovers! Instructions: 1. a machine larger than the cover (the outer ring of the glass ), and install it on the lower panel of the pliers; 2. Choose a slightly smaller than the back cover of the meter and install it on the upper mouth of the capping machine; 3. Place the cover face down, put it on the at the lower mouth, and place the back cover in a proper position; 4. Rotate and unscrew the watch capping machine. 5. Put the watch cloth on the watch when pressing the watch, so as to protect your beloved watch! Capping machine mold specifications: Round mold: (50/48 46/44 42/40 38/36 34/33 32/31 30/28 26/24 23/21 20/18 16 round mold 20/25 round flat mold) Square mold: (45 40 35 30 25 20) Colour:Black Material:Metal + ABS Size:15x10cm Package Contents: 1 * Capping machine 18 * Accessories Only the above package content, other products are not included. Note: Light 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.