PET-Kanne Screw Cap Spout for PET Plastic Bottles

Design preview. Rendered from the file, not a photo.

The maker says it fits: PET plastic bottles with PCO28 screw thread (0.5L, 1L, 1.5L European bottles). See the proof

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What it does

Screw-on cap shaped for PCO28 thread bottles, so it fits standard PET bottles
Built with a separate air inflow channel, so liquid pours out in a steady stream
Turns a plastic bottle into a plant watering spout for everyday garden use
Doubles as a pour spout for drinking water when you want a simple tap
Made to order in the USA after you order, sized for 0.5L, 1L, and 1.5L bottles

Twin channels shape this screw-on cap, one for water and one for air. Twist it onto a plastic bottle and it becomes a watering spout for your plants or a simple tap for drinking water.

The cap is built with a PCO28 screw thread, the standard size found on many 0.5L, 1L, and 1.5L PET bottles sold in Europe. The separate air inflow channel lets water flow out while air moves in at the same time, instead of the glugging you get from a plain open bottle.

Use it in the garden to water potted plants with a bottle you already have on hand, or set it up as a small drinking water tap for the kitchen or a picnic table. If you plan to use it with drinks, choose a food-safe material for that use.

This cap is made to order in the USA after you place your order. This listing is not affiliated with or endorsed by any bottle brand.

3.3k downloads in the maker community. That is interest in the design on the site it came from, not our sales.

What it fits

The maker says it fits: PET plastic bottles with PCO28 screw thread (0.5L, 1L, 1.5L European bottles)

That is the maker's word, not a fit we measured. Check the size below against your own.

PET plastic bottles with PCO28 screw thread (0.5L, 1L, 1.5L European bottles) (model PCO28)From the maker's own listing title, checked 2026-08-13. See the original post

What you get

This design prints as one piece.
Nothing else to print or buy for this to work.

What it is made of

Designs like this print well in PETG. Compare the materials.

Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.