Caseback Opener Wrench for Large Watches


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There are a lot of caseback wrenches out there – even Harbor Freight sells them! But this set is great for a few reasons: it includes a nice box to keep it all together, it’s extra large for better leverage plus you’ll be able to open larger diameter watches, and it includes four different sets of heads for different shapes (flat, square, round, and triangle). For the more stubborn backs (or over-tightened by the last guy) you’ll want to use this in conjunction with a vice, or get a bench caseback opener.

Pro Tip: It’s recommended to tape off your watch or put a vinyl strip between the caseback and tool to prevent scratches from slipping.

  • Dimensions: 16.5cm x 7cm x 1cm
  • Works on watches sized from 18mm to 60mm!


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Venus Caliber 178