Easy to use, this case opener includes 12 (4 sets of 3 insertable jaw pins - round, flat, square and toothed) non-scratching jaw pins; non-slip handle is 5.5 inches long and works on up to a 40mm diameter case. Intended strictly for experienced watch repair professionals. Instructions: choose the right pin shape to set them on the wrench, adjust to fit the diameter of the watch case's circumference, then turn to lift the case. Use with watch press to complete the job.

* Great for both waterproof or regular watches - holds up to a 40mm diameter watch case

* Includes 12 pins :3 sets of 4 insertable jaw pins - round, flat, square and toothed

* Jaw pins are non-scratching for use with even the most precious and fragile watch cases

* Non-slip, comfortable handle is 5.5 inches long and is made for the best gripping power

* To use :choose and set pins, adjust to fit, and turn to lift! - made for professionals