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Professional JAXA Type XL Watch Case Back Opener Wrench for Large Waterproof Watches



This is a quality TIMEWHEEL brand JAXA type large waterproof watch case opener wrench is custom manufactured with upgrade material and finish (please refer to pictures above for product detail). This useful wrench will open & close most screw waterproof watch case backs from 17mm up to 55mm case sizes. The wrench includes 4 sets of interchangeable chucks: Square, Round, Flat & Knurled. These chucks are well designed and quality made they will not fall off when use. This is a must have tool for watch lovers and watch collectors. Exclusively by Timeweel.


  • Open & close most screw waterproof case back up to 55mm case size
  • Includes four 4 sets of interchangeable chucks: Square, Round, Flat & Knurled
  • The maximum jaw opening is 52mm
  • Knurled handle prevents losing your grip
  • Chucks are quality made they guarantee not fall off when use

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