Features: Main Structure: The watch press die has a metal core in the middle, which is more durable and can meet the needs of general watch repairers and watch lovers! Watch Press Repair Tool Kit: Watch press die made out of superior nylon and specially made to Close the case of your watch yourself in approx 15 minutes. Easy To Use: Only three steps - choose two suitable dies, screw them on the press tool, and then press down the handle.(machine is not included) No Marks: Latest design dies fitting, easy and fast replacement on press tool. Material does not make marks or scratches on crystal glass. You don't need a technician to do it. Size Details: Round die dia: 16mm/0.63inch, 20mm/0.79inch, 18-20mm/0.71-0.79inch, 21-23mm/0.83-0.91inch, 24-26mm/0.94-1.02inch, 28-30mm/1.1-1.18inch, 31-32mm/1.22-1.26inch, 33-34mm/1.3-1.34inch, 36-38mm/1.42-1.5inch, 40-42mm/1.57-1.65inch, 43-45mm/1.69-1.77inch, 48-50mm/1.89-1.97inch, rectangle die dia: 20mm/0.79inch, 25mm/0.98inch, 30mm/1.18inch, 35mm/1.38inch, 40mm/1.57inch, 45mm/1.77inch, peltate press die length: 37mm/1.46inch, 45mm/1.77inch. Specifications: Type: Watch Press Die Kit Material: Nylon, Metal Color: White Size: About Round Die Dia: 16mm/0.63inch, 20mm/0.79inch, 18-20mm/0.71-0.79inch, 21-23mm/0.83-0.91inch, 24-26mm/0.94-1.02inch, 28-30mm/1.1-1.18inch, 31-32mm/1.22-1.26inch, 33-34mm/1.3-1.34inch, 36-38mm/1.42-1.5inch, 40-42mm/1.57-1.65inch, 43-45mm/1.69-1.77inch, 48-50mm/1.89-1.97inch Rectangle Die Dia: 20mm/0.79inch, 25mm/0.98inch, 30mm/1.18inch, 35mm/1.38inch, 40mm/1.57inch, 45mm/1.77inch Peltate Press Die Length: 37mm/1.46inch, 45mm/1.77inch Package Included: 20pcs x Watch Press Die Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.