New Watch Case Wrench This is a new watch case opener wrench The original patented waterproof case wrench This opener is the highest quality Four sets of pins, twelve total (round, square, flat and curved) Opens common screwback case backs types: hole, multi-notch, polygon and knurled Can also be used in conjunction with the "L & G Open-all" case wrench to gain additional leverage for opening watch cases This is a replacement for the Jaxa wrench This adjustable case opener can open Bulova, Rolex, Movado, Gruen, Longines and Accutron screw type back waterproof watches