Adjustable Watch Snap Back Case Opener Remover Removal Repair Tool This is aN adjustable watch case opener The blade adjusts to accommodate the diameter of your watch With the turn of a knob, the blade moves closer between the case and case back for easy removal With the anvil adjusted all the way out the working area between the blade and anvil measures approximately 1 3/8" It measures approximately 6 1/4" x 3 9/16" x 2 1/4" (158.75 x 90 x 57) Newer versions of the item shown may be shipped, as a result, there may be a slight variation in color and design.