Two 2 Prong Waterproof Case Openers for Opening Watch Cases This is a new set of two 2 prong waterproof watch case openers These are great for opening watch cases They have adjustable tempered pins for easy use on water resistant cases These are compact size that make them very convenient The tips adjust from 7/16" to 2 1/8" (11 mm to 53 mm) This is a replacement for the Jaxa wrench It measures approximately 2 11/16 x 1 1/8 (68 x 28 mm) Newer versions of the item shown may be shipped, as a result, there may be a slight variation in color and design.