It does not hurt the watch, it is made of high-quality materials, and it is sturdy and durable. The screw in the middle of the mold is more convenient and labor-saving, and is suitable for repairing watches, sealing cases, etc. Dies of different sizes can meet your different needs. A must-have tool for watchmakers and watch repairers. Simple and convenient to carry and use, it is better to put the tablecloth on the table when pressing it, so as to better protect your love table Type: Tool Model: capping machine Features: convenient and labor-saving, does not hurt the watch Type: watch back cover Item Type: Repair Tools & Kits Cap size: 18/20, 21/23, 24/26, 28/30, 31/32, 33/34, 36/38, 40/42, 44/46, 48/50 color:Silver Material:Metal size:8 x 7 x 9cm Package Contents: 1 x Capping Machine 12 x plastic cover 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.