---
product_id: 48440358
title: "OTOOLWORLD Watch Case Open Ball Friction Ball Watch Case Open Ball Battery Change"
brand: "diy crafts"
price: "72.69 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Diy Crafts"
url: https://www.desertcart.tn/products/48440358-otoolworld-watch-case-open-ball-friction-ball-watch-case-open
store_origin: TN
region: Tunisia
---

# Air-filled friction ball for grip Scratch-free screw back opener 2.5-inch diameter precision fit OTOOLWORLD Watch Case Open Ball Friction Ball Watch Case Open Ball Battery Change

**Brand:** diy crafts
**Price:** 72.69 DT
**Availability:** ✅ In Stock

## Summary

> 🔩 Unlock your watch’s secrets with zero scratches and max style!

## Quick Answers

- **What is this?** OTOOLWORLD Watch Case Open Ball Friction Ball Watch Case Open Ball Battery Change by diy crafts
- **How much does it cost?** 72.69 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/48440358-otoolworld-watch-case-open-ball-friction-ball-watch-case-open)

## Best For

- diy crafts enthusiasts

## Why This Product

- Trusted diy crafts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted by Watch Pros:** Top-rated by watch repair experts for stubborn case backs.
- • **Universal Compatibility:** Ideal for all screw back watches—ditch the wedges for good.
- • **Compact & Portable Design:** 2.5-inch diameter fits perfectly in your toolkit or drawer.
- • **Customizable Air Pressure:** Pump up the friction ball for a tailored grip every time.
- • **Effortless Screw Back Opening:** Twist with confidence—no scratches, just smooth access.

## Overview

The OTOOLWORLD Watch Case Open Ball is a 2.5-inch diameter air-filled friction ball designed specifically for opening screw back watch cases without scratching. Its customizable air pressure ensures a secure grip, making battery changes and repairs effortless. Highly rated by watch repair professionals, this compact tool is a must-have for any watch enthusiast or professional aiming for precision and care.

## Description

OTOOLWORLD Watch Case Open Ball Friction Ball Watch Case Opener Ball Battery Change

Review: Brilliant, simple tool - This review is for a OTOOLWORLD friction ball tool ordered 2026-05-16 and received 2026-05-17. I paid $6.21 including free shipping with my Prime membership. The packaging states Made in China. The ball received is a sparkly blue color, was inflated properly and included a standard needle. It's about the same size as a baseball (a little larger than a tennis ball), fits well in the hand and is easy to grip. Oddly, it even has a pleasant odor but for the same reason, I won't be repurposing to play fetch out of concern for possible toxicity. I was skeptical when I first felt it as it wasn't as sticky as I expected but less than a minute later I had the backs off of two Casio watches that have the six-slot threaded covers. I DIY basically everything but most medical and dental so there's a good chance that the friction ball and technique will be useful tool beyond watch maintenance. I presume that it'll be impossible to feel how tightly I re-install covers after replacing the batteries but I figure that as tight as is possible with the ball will be adequate.
Review: Great for working on watches. - Easily opens up watch casebacks.

## Features

- The ball is already full of air + 1 ball needle
- Great for opening watch cases , Hold the watch in one hand and in the other hand, press the friction ball onto the back of the watch.
- Start twisting to unscrew the watch back.
- 2-1/2 inches in diameter
- and you can fill air by the basketball pump yourself if need full air

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07417BNF9 |
| Additional Features | Portable |
| Best Sellers Rank | #35,723 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #28 in Watch Repair Tools & Kits |
| Brand | DIY Crafts |
| Brand Name | DIY Crafts |
| Closure Type | Snap |
| Color | gold |
| Customer Reviews | 4.2 out of 5 stars 1,315 Reviews |
| Finish Types | Polished |
| Inner Material | Faux Leather |
| Item Dimensions D x W x H | 3.5"D x 5"W x 4.53"H |
| Item Weight | 495 Grams |
| Jewelry Storage Type | Jewelry Case |
| Manufacturer | OTOOLWORLD |
| Manufacturer Part Number | diy_product_B07417BNF9 |
| Material | Plastic |
| Material Type | Plastic |
| Model Number | diy_product_B07417BNF9 |
| Mounting Type | Table Top |
| Number of Compartments | 2 |
| Number of Drawers | 1 |
| Number of Items | 1 |
| Occasion Type | Birthday, Engagement, Mother's Day, Wedding |
| Recommended Uses For Product | Watch repair |
| Shape | Cylindrical |
| Special Feature | Portable |
| Style | Open Ball |
| Style Name | Open Ball |
| Target Audience | Women |
| UPC | 695288514341 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** DIY Crafts
- **Color:** gold
- **Finish Type:** Polished
- **Material:** Plastic
- **Product Dimensions:** 3.5"D x 5"W x 4.53"H
- **Recommended Uses For Product:** Watch repair
- **Shape:** Cylindrical
- **Special Feature:** Portable
- **Style:** Open Ball
- **Target Audience:** Women

## Images

![OTOOLWORLD Watch Case Open Ball Friction Ball Watch Case Open Ball Battery Change - Image 1](https://m.media-amazon.com/images/I/61gXliQXl2L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Brilliant, simple tool
*by T***Y on May 18, 2026*

This review is for a OTOOLWORLD friction ball tool ordered 2026-05-16 and received 2026-05-17. I paid $6.21 including free shipping with my Prime membership. The packaging states Made in China. The ball received is a sparkly blue color, was inflated properly and included a standard needle. It's about the same size as a baseball (a little larger than a tennis ball), fits well in the hand and is easy to grip. Oddly, it even has a pleasant odor but for the same reason, I won't be repurposing to play fetch out of concern for possible toxicity. I was skeptical when I first felt it as it wasn't as sticky as I expected but less than a minute later I had the backs off of two Casio watches that have the six-slot threaded covers. I DIY basically everything but most medical and dental so there's a good chance that the friction ball and technique will be useful tool beyond watch maintenance. I presume that it'll be impossible to feel how tightly I re-install covers after replacing the batteries but I figure that as tight as is possible with the ball will be adequate.

### ⭐⭐⭐⭐⭐ Great for working on watches.
*by T***S on May 12, 2026*

Easily opens up watch casebacks.

### ⭐⭐⭐⭐⭐ Sticky ball watch back removal
*by K***P on March 7, 2022*

The sticky ball watch back removal works quite well .. The one i received is yellow ( not my first choice of colors but who cares it's a ball ) came prefilled in it's own cardboard box , i was hesitant to purchase because of all the choices of sticky balls on amazon with mixed reviews , This one had mostly good reviews so i decided to try it anyways and for 7.99 at the time of purchase i couldn't be happier , Worked great on the first two watches that i tried it on so it's already paid for itself in my eyes . Both watches were a little hard to get open at first but within seconds they both opened right up , the ball has great gripping power and no slippage , pre inflated so there was no messing with guessing on how much air needed to be added before use . It does come with a filling needed which i put away for future use if needed but i am quite happy and impressed with it as is right out of the box ., i would def. buy again if i needed to replace . This is the one to get if you are like me and having a hard time deciding between the affordable ones and the marked up name brands that can be priced upwards of $15.00-$20.00 . This one worked perfectly at the 7.99 price so far . Hope to get many uses and years out of this sticky ball watch back removal tool , 5 stars *****

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-06-08*