This is a 3D-printable set of faucet aerator keys, perfect for removing hidden or "cache" aerators 💧—the kind that sit flush with the faucet and are tough to remove without the right tool. The set includes 4 standard sizes commonly used in household faucets: M16.5, M18.5, M21.5, and M24.

📏 Included Sizes

🧰 How to Use

1. 🔍 Measure the inside diameter of your faucet’s aerator.
2. 🔧 Choose the matching key size from the set.
3. 🔄 Insert and turn counterclockwise to remove the aerator.
4. 🧼 Clean or replace the aerator.
5. 🔁 Reinstall by turning clockwise with the same key.

🖨️ Printing Tips & 🔬 Material Suggestions

Printed using PLA (Prusament Marble Grey and Galaxy Black), these keys handled stuck aerators better than the official tool that came with the faucet.

• ✅ PLA: Works for most cases
• 💪 PETG / ABS / ASA: Recommended for tough or mineral-clogged aerators

🎨 Optional: Use the painting tool in your slicer to color-code sizes or highlight details for extra clarity and style.