---
product_id: 130664478
title: "Carbonation Cap Diffusion Air Stone - Homebrew Carbonating Kits Including 5/16\" Carbonation Cap, 2 Micron Diffusion Stone, 2 inch Beer Line, used for Soda, Water, Beer Brew"
brand: "luckeg"
price: "FREE"
currency: UYU
in_stock: false
reviews_count: 8
url: https://www.desertcart.uy/products/130664478-carbonation-cap-diffusion-air-stone-homebrew-carbonating-kits-including-5
store_origin: UY
region: Uruguay
---

# 2 micron ultra-fine diffusion stone Universal fit for most PET bottles Precision-machined carbonation cap Carbonation Cap Diffusion Air Stone - Homebrew Carbonating Kits Including 5/16" Carbonation Cap, 2 Micron Diffusion Stone, 2 inch Beer Line, used for Soda, Water, Beer Brew

**Brand:** luckeg
**Price:** FREE
**Availability:** ❌ Out of Stock

## Summary

> 🍺 Elevate your homebrew game—because flat drinks are so last season!

## Quick Answers

- **What is this?** Carbonation Cap Diffusion Air Stone - Homebrew Carbonating Kits Including 5/16" Carbonation Cap, 2 Micron Diffusion Stone, 2 inch Beer Line, used for Soda, Water, Beer Brew by luckeg
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/130664478-carbonation-cap-diffusion-air-stone-homebrew-carbonating-kits-including-5)

## Best For

- luckeg enthusiasts

## Why This Product

- Trusted luckeg brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Portable Design:** Lightweight 5.6 oz kit fits easily in your brewing setup or picnic basket—fizz on the go!
- • **Ultra-Fine Diffusion Stone:** 2 micron pore size ensures rapid, even carbonation for perfectly bubbly beverages every time.
- • **Effortless Carbonation Control:** Inject CO2 seamlessly with a 5/16" barb and ball lock compatibility for pro-level fizz.
- • **Versatile Beverage Compatibility:** Carbonate soda, beer, juice, or water—your homebrew’s new best friend.
- • **Quality Assured with Risk-Free Guarantee:** Backed by a 45-day money-back promise, because your brew deserves the best.

## Overview

The Carbonation Cap Diffusion Air Stone kit includes a precision-machined carbonation cap with a 5/16" barb, a 2 micron diffusion stone, rubber rings, and a 2-inch beer line. Designed to fit most PET bottles and compatible with grey gas ball lock disconnects, it enables fast, even carbonation of various beverages including soda, beer, juice, and water. Lightweight and portable, this kit is perfect for homebrewers seeking professional-quality carbonation with a 45-day money-back guarantee.

## Description

CARBONATION CAP WITH DIFFUSION STONE FEATURES: Package: Carbonation Cap with 5/16" Barb, 2 pcs Rubber Ring, 2 Micron Diffusion Stone, 2 inch Beer Line; Connect: Unique Machined the Carbonation Cap, can fit Grey Gas Ball Lock Disconnect and the Barb End Connect Plastic Tubing and Diffusion Stone; Use: Carbonation Cap can Carbonate Various Beverages, including Soda, Beer, Juice, Water or Clean Beer Line; HOW TO USE: Leave around 2 or 3" of Space in the Bottle, Squeeze out all of the Air, then Tighten the Carbonation Cap on the Bottle; Connect the Gas Ball Lock Disconnect to the Carbonation Adapter and Start inject CO2 to the PET Bottles; Turn on the CO2 Regulator, Shake the Bottle Vigorously until reach a desired Carbonation Level; In order to CO2 can be absorbed much faster, Please Make Sure the Beer, Water, Juice, Soda is very Cold; The Carbonation Cap comply with international Quality Standards, it can attached to most Plastic Bottles; If you attend Parties, Picnics, Camping and so on, this Carbonation Cap is a best Choice to carbonate different Beverages; Quality Guarantee: Any Defective for Carbonation Cap, Money Back or Replacement free.

Review: Nice simple all-in-one kit for the bottle end of home carbonation - As others have mentioned, the tube fit is VERY tight, and you might have to work it back and forth to get it on. I have seen zero leaks so far, and it does really help my carbonation setup (simple tank and regulator) get a lot more CO2 into the water than just shaking the bottle alone. It's a bit harder to get the included male quick-release to pair up with the female one I've got for my setup, but it's not that much more difficult. I was quite careful to use gloves when touching the "stone" since they warn you about hand oil. It works pretty well and it's fairly low cost so it doesn't add much to my setup's total cost.
Review: Stainless steel, fits carbonated soda bottles perfectly - I carbonate my own spring water. I probably drink a liter of sparkling water each day and this stainless carbonation cap fits any standard plastic soda bottle such as a one liter or two liter soda bottle. It would also fit a smaller bottle but no point in that for me. I fill my bottles with flat spring water because it tastes better than what I get from my tap, not to mention all the impurities in my local water. After filling most of the bottle but leaving a little space in the top, I close it up and attach to my CO2 bottle regulated at 45 PSI. I do release the air after letting in some CO2, then seal completely, pressurize, and shake it up to absorb all the CO2. A few seconds later, I've got carbonated spring water. This is cheaper than paying a dollar per liter but it also means I won't throw away 350 liter plastic bottles in the trash each year. desertcart does sell a plastic version of this, don't waste your time. they are about the same price and this stainless cap is indestructible and looks cool. This one comes with a flexible tube and diffusion stone that releases the CO2 into the water with very tiny bubbles that absorb faster than just dumping in the gas. It's not totally necessary, but does seem to work well. The complete kit is very high quality and does exactly what it is designed to do.

## Features

- Home Brew Carbonating Kit, Including Carbonation Cap with 5/16" Barb, 2 pcs Rubber Ring, 2 Micron Diffusion Stone, 2 inch Beer Line;
- Unique Machined the Carbonation Cap, can fit Grey Gas Ball Lock Disconnect and the Barb End Connect Plastic Tubing and Diffusion Stone;
- The Carbonation Cap comply with international Quality Standards, it can attached to most PET Bottles;
- The Carbonation Cap can Carbonate Various Beverages, including Soda, Beer, Juice, Water or Clean Beer Line;
- Quality Guarantee: Any Defective for Homebrew Carbonating Kit, Backed by 45 days Money-Back.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #295,982 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #543 in Beer Brewing Kegs & Kegging |
| Customer Reviews | 4.3 out of 5 stars 136 Reviews |

## Images

![Carbonation Cap Diffusion Air Stone - Homebrew Carbonating Kits Including 5/16" Carbonation Cap, 2 Micron Diffusion Stone, 2 inch Beer Line, used for Soda, Water, Beer Brew - Image 1](https://m.media-amazon.com/images/I/51SUkcBrAmL.jpg)
![Carbonation Cap Diffusion Air Stone - Homebrew Carbonating Kits Including 5/16" Carbonation Cap, 2 Micron Diffusion Stone, 2 inch Beer Line, used for Soda, Water, Beer Brew - Image 2](https://m.media-amazon.com/images/I/6149Y1RezNL.jpg)
![Carbonation Cap Diffusion Air Stone - Homebrew Carbonating Kits Including 5/16" Carbonation Cap, 2 Micron Diffusion Stone, 2 inch Beer Line, used for Soda, Water, Beer Brew - Image 3](https://m.media-amazon.com/images/I/61HlJZdd-pL.jpg)
![Carbonation Cap Diffusion Air Stone - Homebrew Carbonating Kits Including 5/16" Carbonation Cap, 2 Micron Diffusion Stone, 2 inch Beer Line, used for Soda, Water, Beer Brew - Image 4](https://m.media-amazon.com/images/I/51zDUjHUjUS.jpg)
![Carbonation Cap Diffusion Air Stone - Homebrew Carbonating Kits Including 5/16" Carbonation Cap, 2 Micron Diffusion Stone, 2 inch Beer Line, used for Soda, Water, Beer Brew - Image 5](https://m.media-amazon.com/images/I/61g89OecuIL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice simple all-in-one kit for the bottle end of home carbonation
*by C***W on June 27, 2025*

As others have mentioned, the tube fit is VERY tight, and you might have to work it back and forth to get it on. I have seen zero leaks so far, and it does really help my carbonation setup (simple tank and regulator) get a lot more CO2 into the water than just shaking the bottle alone. It's a bit harder to get the included male quick-release to pair up with the female one I've got for my setup, but it's not that much more difficult. I was quite careful to use gloves when touching the "stone" since they warn you about hand oil. It works pretty well and it's fairly low cost so it doesn't add much to my setup's total cost.

### ⭐⭐⭐⭐⭐ Stainless steel, fits carbonated soda bottles perfectly
*by D***Y on April 14, 2022*

I carbonate my own spring water. I probably drink a liter of sparkling water each day and this stainless carbonation cap fits any standard plastic soda bottle such as a one liter or two liter soda bottle. It would also fit a smaller bottle but no point in that for me. I fill my bottles with flat spring water because it tastes better than what I get from my tap, not to mention all the impurities in my local water. After filling most of the bottle but leaving a little space in the top, I close it up and attach to my CO2 bottle regulated at 45 PSI. I do release the air after letting in some CO2, then seal completely, pressurize, and shake it up to absorb all the CO2. A few seconds later, I've got carbonated spring water. This is cheaper than paying a dollar per liter but it also means I won't throw away 350 liter plastic bottles in the trash each year. Amazon does sell a plastic version of this, don't waste your time. they are about the same price and this stainless cap is indestructible and looks cool. This one comes with a flexible tube and diffusion stone that releases the CO2 into the water with very tiny bubbles that absorb faster than just dumping in the gas. It's not totally necessary, but does seem to work well. The complete kit is very high quality and does exactly what it is designed to do.

### ⭐⭐⭐⭐ So close to perfect.
*by B***T on February 11, 2024*

This really improved the consistency of my carbonated water. I wanted to give this five stars but just to many assembly and installation gotcha that instructions could have cleared up if they were included. First they are very generous with the hose. More than likely you will want to trim that so that the stone doesn’t bind up on the bottom of the bottle. This makes the cap really hard to get on and off. Second the hose is the right ID. Many reviews get that part wrong. It’s to thick. There is no reason to have it this thick. Even if you go to a full 80psi which is double working pressure (not sure stone is rated for that) and it failed it would be contained by the bottle. This tube is just too rigid for what you need. I will most likely replace it with hose rated for 40psi with more flexibility. As others mentioned for assembly dip the end in simmering hot water for 30 seconds. Grip the hose back where it is comfortable to hold. Press on with a rocking twisting motion.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.uy/products/130664478-carbonation-cap-diffusion-air-stone-homebrew-carbonating-kits-including-5](https://www.desertcart.uy/products/130664478-carbonation-cap-diffusion-air-stone-homebrew-carbonating-kits-including-5)

---

*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-09-25*