Case Opener with Four Sets of Pins

We supply this wrench for threaded waterproof case backs that require a firm engagement across their notches or flats. The main carrier adjusts across the back diameter by a central screw, and the chucks seat directly into the jaws. It belongs in the tray beside your case vise.

Chuck profiles

Four distinct pin profiles fit into the tool jaws to meet round holes, flat slots, polygons, or curved notches on the steel back. You choose the pair that matches the case recess before setting the span.

Adjustable span

The knurled center wheel moves the side carriers in opposite directions along the threaded bar. This sets the pin spacing to align squarely over the perimeter of the watch back before you apply torque.

Steel frame

The frame and drive components are cut from steel to hold their alignment under hand pressure. The broad handle section gives purchase while your other hand steadies the watch in a bench holder.

Fitted box

The carrier and the extra sets of chucks rest in dedicated recesses inside a red storage box. Keeping the loose points organized stops them from rolling across the bench mat when not in use.