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Product Features:

  • Sticky screw watch back case opener rolling ball
  • High quality and handfeel
  • Innovative tool, makes you open the watch in an easy, precise and safe way for any but the most difficult waterproof casebacks
  • It's smart design allows it to fit and evenly grip the surface, giving it more strength yet never scratching your watch
  • Easy to use, simply squeeze, press and then turn
  • Perfect for any toolkit whether you're a professional watchmaker or a hobbyist
  • This is a tool, not a toy ball (maybe you can make it as a tool and a toy), only use to open the screwthread watch back case
  • Net Weight: 39 g / 1.365 oz
  • Diameter: 6~8cm/ 2.34~3.12inch
  • Color: yellow

Package Contents:

  • 1 x Watch Back Case Opener Rolling Ball
Available Shipping Method Tracking NO. Estimated Delivery


1) Estimated delivery time includes processing time and actual shipping time. Normally our processing will take 1-2 working days.

2) Estimated Delivery Time shown above is only for reference, since actual delivery time depends on shipping service selected, delivery schedule and local customs clearance time, especially during peak periods.

3) Shipping Costs shown include fuel surcharges and may change a bit due to the fluctuation of currency exchange rates.

4) For the order with only one item (only one item):

a. if your item is less than 20USD and need registered freight, you need to pay certain upgrading fee.
b. if your item is more than 20USD, our system will ship your item with tracking number automatically free of charge.

5) For the order with multiple items (multiple items):

a. if most items' price is more than 20USD in one order, we will send the parcel with tracking number for free.
b. if most items in one order is low value with reasonable weight and size, our Checkout process is able to identify such order giving free registered freight on it.
c. if most items in one order are low value but with relatively high weight (i.e. Value: Weight ratio is not in reasonable range), we will charge certain discounted upgrading fee if you need tracking number.

Custom Tax

A. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility.

B. Please check with your country's customs office to determine what these additional costs will be prior to buying.

Return Policy

All the cell phones you bought from come with 6-month warranty and all the items we offer have a 3-month warranty. See additional details, please refer to our Shipping & Returns or our FAQ Return Policy.

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Customer Reviews
Average customer review:
5 (5out of 5)
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by skippy.js ( NL ) 2015-04-19 13:36:00 GMT

deze bal is handig werkt door dat hij klemt door wrijving.
enige je moet wel rekening houden dat hij leeg binnen komt dus je moet hem zelf oppompen .
ik heb een compressor dus dat was zo gepiept.
(tip!)heb je die niet een voetbalpomp werkt ook wel.

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by John van Eekelen ( private ) 2013-06-05 12:36:45 GMT

This ball might be intended for screwback watches, but it's also capable to help you open all kinds of lids and caps!
So great!
I know it's quite expensive, so I wouldn't recomend it as a toy, but if you frequently have troubles opening lids, caps, pots, and so on Buy It!
And of course, it actually DID help me to open up a screwback watch..


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by Pedro ( ES ) 2014-02-24 11:40:32 GMT

Resulta gracioso el poder abrir los relojes con la pelotita, Al inflarla, porque viene desinflada, ten cuidado no te pases, debe de estar inflada pero que no sea excesivamente rígida.

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