Watch Case Opener and Centre Nut Tightener for Quartz Clocks

For snap-on watch backs.
Can be used by left-handed and right-handed people

Die Sizes (mm): 18.50, 20.20, 22.50, 26.50, 28.30, 29.50.
To open oyster style watches. Watch gets locked into position so that it reduces the chances of scratching.

Insert the hook into the notch of the case back and pop it open.

With a new modified handle for comfortable grip.
Hardened blade for removing snap-on watch case backs.