Material: plastics + stainless steel Press bed size: 50/48 46/44 42/40 38/36 34/33 32/31 30/28 26/24 23/21 20/18 Die quantity: 12pcs Rod length: about 18 cm/7.08'', height: about 19 cm/7.48'' Usage method: 1. First, choose a press die larger than the watch bed, and install it on the lower screw of the pliers. 2. Select a press slightly smaller than the back cover of the watch and install it on the upper mouth of the pliers. 3. Put the watch die press down, on the press bed at the lower mouth, and put the back cover in the right position. 4. Gently press down the pliers and close the back cover. 5. When pressing a watch, put the cloth cushion on it so that it can better protect your watch! Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Packing list: 1 x Watch Case Presser 12 x Dies