---
description: China-made adjustable case back opener, 14-76mm. Stainless steel, fits round/polygonal/notched backs. Essential for watch repair.
title: China Make Case Back Opener - Sofly
image: https://www.soflypart.com/wp-content/uploads/2019/09/DSC01101.jpg
---
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- **China Make Case Back Opener**
[](https://www.soflypart.com/wp-content/uploads/2019/09/DSC01101.jpg)
# China Make Case Back Opener
$5.00
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- Covers 99% of Repair Needs
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## Product Description
This **China-made professional watch case back opener** features an adjustable wrench design with an opening range of **14-76mm**, compatible with most round and polygonal screw-down waterproof watch case backs. Made of high-quality stainless steel (SUS 304/SUS 420), it easily opens hexagonal, polygonal, and notched case backs. It is an essential tool for watchmakers and DIY enthusiasts when replacing batteries, inspecting movements, or performing routine maintenance.
## Features & Function
- **Adjustable opening range** – 14-76mm fits most watch case backs
- **High-quality stainless steel** – SUS 304/SUS 420 for durability and rust resistance
- **Multi-style compatibility** – opens hexagonal, polygonal, and notched backs
- **Precision gripping** – secure hold prevents slipping and case damage
- **Essential maintenance tool** – ideal for battery replacement and movement inspection
## Specifications
- **Type**: Adjustable case back opener / case wrench
- **Opening Range**: 14 – 76 mm
- **Material**: Stainless steel (SUS 304 / SUS 420)
- **Compatible Case Backs**: Round, hexagonal, polygonal, notched screw-down types
- **Application**: Battery replacement, movement inspection, routine maintenance
- **Condition**: Brand new
## Applications
- **Battery replacement** – opening case backs for quartz watches
- **Movement inspection** – accessing and examining mechanical movements
- **Routine maintenance** – gasket replacement and case cleaning
- **DIY watch repair** – for enthusiasts and hobbyists
## FAQs
**1. Is this an original brand tool?**
No, this is a **China-made aftermarket tool**, not from a specific brand. It offers reliable functionality at an affordable price.
**2. What types of case backs can this tool open?**
This tool can open **round, hexagonal, polygonal, and notched screw-down case backs** within the 14-76mm size range.
**3. Will this tool scratch my watch case back?**
When used properly with the correct adjustment, the **precision-fit jaws** minimize slipping and reduce the risk of scratches. For extra protection, we recommend placing a **protective film** over the case back before use.
## Why Choose SOFLY Watch Parts?
- Fast worldwide shipping within 3 business days.
- Competitive pricing on Seiko/Hattori calibers.
- 3,000+ watch movements and parts in stock.
- Trusted by watchmakers worldwide.
- Personalized sourcing support via **info@soflypart.com** or WhatsApp **+86 18620212114**.
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