Set of 4 screw-back case opener tools sized specifically for Panerai watches, covering 40mm, 44mm, 45mm and 47mm case backs.
⭐ At a glance
📏 4 sizes included: 40mm, 44mm, 45mm and 47mm
✅ Fits most Panerai watch models with screw-back cases
📦 Full set of 4 tools supplied together
✔️ New with tags, unused
🔧 What it does & how to use
A screw-back case opener grips the notches on a threaded watch case back and lets you turn it open without marking the case. This set is designed for Panerai-style screw-down backs and gives you four sizes so you can match the tool to the exact case diameter you're working on, useful for hobbyists doing battery changes or servicing, and for professionals who need the right fit across a range of case sizes.
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Select the size: choose the 40mm, 44mm, 45mm or 47mm tool to match the watch case back you're opening.
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Locate the notches: line up the tool's prongs or teeth with the notches cut into the case back.
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Apply steady pressure: hold the watch securely and press the tool firmly into the notches so it doesn't slip.
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Turn to unscrew: rotate the tool anticlockwise to loosen and remove the screw-back case.
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Reverse to refit: use the same tool clockwise to screw the case back on securely once work is done.
⚠️ Please check the case back diameter of your specific Panerai model before use, as case back sizes vary across the range and the tool must match the notch layout and diameter to grip properly.
