Features:1. The watch case fixing tool can be set in different positions for different watch cases of different sizes, and can firmly fix watch cases with a maximum diameter of 30mm.2. It is a suitable watch back case holder for watch repair. With the watch holder, you can easily open your watch back case in seconds for repairing or other uses.3. Confirm that the clamping size of this holder is suitable for your watch before ordering. Used with the Watch Back Cover Opener, the back cover of the watch can be opened to repair the watch.Specifications:Material: Plastic(PE)Color: BlackTotal Size: 84 x 50 x 38mm / 3.31 x 1.97 x 1.5-inch(L*W*H)Clamps Adjustable Distance: 30mm / 1.18-inchPackage Content:1 x Watch Back Case Cover Holder