Features100% Brand new!Adjustable watch back case cover opener remover opening tool screw wrench watchmaker repair tool.Professional watch repair tools, great for waterproof watch case opening, batteries replacing and watch repairing.Made of metal and ABS plastic, our watch case opener is well-structured and durable for long-last use. It is the most effective solution for watch case opening.Easy to adjust and use. Adjustable jaw distance from 20mm to 56mm, can fit different size watches. Easy to use - just roll the adjustment wheel to set the bit spacing to fit your watch's back case grooves.Fun of DIY. Changing the watch battery by yourself can not only save time and money, but also enjoy the fun of hands-on repairs. SpecificationsMaterial: Metal+ABS plasticColor: BlueAdjustable Jaw Distance: From 20 mm to 56 mmSize(L*W*H): About 70x29x12mm/2.76x1.14x0.47" AttentionsPlease allow tiny size deviations due to human measurement.Due to the effect of light and monitor's brightness, there may be slight differences between the color tone of the photo and the actual item!This watch case opener is suitable for screw down watch back case, cannot be utilized in the pressure type watch case. Please confirm the back cover type of your watch before buying. Package Included1 x Watch Back Case Opener