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EDIT 7. 2. 2025 - I made Universal Bottle Cap Opener that opens caps with diameters of 27 - 35 mm.

EDIT - PRINT PROFILES - I have added new print profiles with different diameters for larger and smaller caps. I recommend printing the M size first and then deciding which size is ideal for you.

XXXS - 28,6 mm diameter

XXS - 28,8 mm diameter

XS - 29 mm diameter

S - 29,2 mm diameter

M - 29,4 mm diameter (recommended)

L - 29,6 mm diameter

XL - 29,8 mm diameter

EDIT 31. 1. 2025 - It seems that there is a problem with the diameters of PET bottle caps from different countries. This problem can be solved by scaling the tool up or down. For my cap with a diameter of approximately 29.9 mm, the inner diameter of the tool is 29.4 mm. I would like to create more print profiles for different types of PET bottles from different countries, but I do not have the opportunity to physically test them. If you find the right scale for the right diameter, please let me know!

Struggling to open tight PET bottle caps? This handy Bottle Cap Opener provides a better grip and increased leverage, making it easier to twist open even the most stubborn caps.

💡 Ideal for:
✔️ Children & elderly
✔️ People with weaker grip strength
✔️ Hard-to-open bottles

The ergonomic gear-like design ensures a firm hold, allowing effortless opening without slipping. A simple yet highly effective kitchen and household gadget!