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Case Back Opener Wrench

Today: $11.25
Out of stock
ITEM# 13992881

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ITEM#: 13992881

This quality Wrench Screw Back Watch Opener will open and close most screw waterproof watch case backs. This wrench includes 12 patterned pins and grips and 4 sets of interchangeable chucks.

Replace your own watch batteries with this multiple-bit case back opener wrench. You can also use this tool to repair your watch bands, sunglasses frames and other items with tiny-screws. The steel body is fully adjustable for most watch sizes up to 33 millimeters. The knurled handle and adjustable wheel thumb provide a safe, secure and precision grip while you work.

  • Adjustable wheel thumb
  • Knurled handle for secure grip
  • Steel body with 3 adjustable Jaws
  • Includes 18 pins/bits for a variety of case backs
  • Perfect for watch repair, replacing batteries and changing movements
  • Includes four 4 sets of interchangeable chucks: Square, Round, Flat & Knurled
  • Knurled handle prevents loosing your grip
  • The maximum jaw opening is 33mm


Dimensions 6x2x1
Warranty 1 year Limited Manufacturer
Model Number WTK-027

Customer Reviews

5 Stars
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1 Stars
  • Do it yourself watch repair.

    Only works on ladies watches or smaller mens watches. I wear a lot of watches 50mm or larger & for those it doesn't work to well.

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  • Peaceout2u

    Needed to come with directions. Not that easy to remove the back plate of watches.

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  • case back winch

    This is a tool a wish a I had years ago ,being an amateur watch repairer.

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  • Lousy wrench stay away

    Uusally i dont write reviews. But this wrench i bought really boiled my blood. Its of really cheap materail. The handle came off before i use it. And the size of the watch i can effectively use is 35mm not what is stated. So stay away unless you really want to know for sure what i said is true!

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  • Case Back Wrench Opener

    It was easy to understand and use. It did exactly what I wanted it to do. I have used it 5 times since it arrived and worked well on each watch. This has already paid for itself in not having to drive to a jeweler and having the batteries changed.

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  • Watch case opener

    Saves me money, instead of taking my watches to have the batteries changed at watch repair shop, which is very expensive, i now do it myself. Good tool to have.

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  • Fifty-fifty

    I had two watches, same brand, same problem - needing new batteries. After an hour of working on one, I got the back off and the battery replaced. however the other watch I could never get the back off of. This is definitely not what a jeweler uses as they can flip off the back of a watch with ease.

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  • case opener

    This product does not come with any instructions so before you scratch up the back of your watch it would be nice to know how to attach and use the product. First time I have been unhappy with Overstock.

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  • Perfect for changing your own batteries

    I have used this on several of my high end watches, (Bolivia Ect.) no scratching due to the wide selection of tooling allowing you to always get a tight fit on the watch back.

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Questions & Answers

Get your product questions answered right here.
  • can this open the back of a rolex

    • Hello tom, I'm sorry we do not offer compatibility information on this item. Have a great day!

  • can you take the back a tudor watch

    • Hello tom, I'm sorry we do not offer compatibility information on this item. Have a great day!

  • Description states it is for most screw watch backs. All of the watches I've seen and opened were pried off (snapped off). Does this tool work on snap off watch backs. Thank you.

    • Unfortunately, this tiem would not work with watches that have snapped together cases as does not have the required thin edge needed to remove the back casing.

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Shipping & Returns

Standard Return Policy for Jewelry:

Items must be returned in new or unused condition and contain all original materials included with the shipment.
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Shipping Information:

Our standard shipping method is ground shipping. We also offer expedited shipping for most items. Your final shipping cost and estimated delivery timeframe will be available at checkout.
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** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.