JDYYICZ Watch Back Case Opener * This is a new waterproof watch back case wrench.
* Simple to use and fully adjustable, it have adjustable tempered pins for easy use on water resistant cases.
* Its compact size makes it very convenient to use.
* Jaw distance is adjustable from 11mm to 54mm * Size: 70mm X 28mm X 11mm * Material: steel
* Color: blue How to Use:
-Put the Watch Case Holder in place, adjust the white posts, turn the black knob and make it fit snugly around the watch face plate.
-Then roll the adjustment wheel of the Watch Back Case Opener to set the bit spacing to fit your watch's back case grooves.
-Just turn it and your watch back case is open up.