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 , it is better to put the tablecloth on the table when pressing it, so as to better your love tableType: Tool: capping machineFeatures: convenient and labor-saving, does not hurt the watchType: watch back coverItem Type: Repair & KitsCap size: 18/20, 21/23, 24/26, 28/30, 31/32, 33/34, 36/38, 40/42, 44/46, 48/50color:SilverMaterial:Metalsize:8 x 7 x 9cmPackage Contents:1 x Capping Machine12 x plastic coverOnly the above package content, other products are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.