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The cheapest unthreaded cartridge here — $1.17 against $1.80

REDROCK Not stated by the maker

Thirty individually sealed unthreaded 16-gram food-grade CO2 cartridges for mini kegs and soda siphons.

RedRock unthreaded 16 gram food grade CO2 cartridges, thirty pack

REDROCK Not stated by the maker

Thirty individually sealed unthreaded 16-gram food-grade CO2 cartridges for mini kegs and soda siphons.

Type
Disposable CO2 cartridge — UNTHREADED
Neck
Smooth, unthreaded
Charge
16 g (0.6 oz)
Quantity
30
Price per cartridge
$1.17, on the published price and count
Gas
100% pure food-grade CO2
Sealing
Each cartridge individually sealed, leak-proof, stated zero CO2 loss in storage
Stated uses
Homebrew beer, soda makers, seltzers, beer keg chargers, keg taps, compact draft setups
Pressure
Not stated by the maker
Named compatible appliances
None — "a wide range of dispensers"
Warranty
Not stated by the maker
Amazon reference
B076NTQ1NS
EAN
0799632090861
  • The cheapest unthreaded cartridge on this shelf at $1.17 — 63 cents a cartridge less than the ten-pack alternative
  • Individually sealed, with a stated claim of no CO2 loss during storage, which is the thing that goes wrong with a box of cartridges in a cupboard
  • No pressure figure and no named compatible appliance, where the other unthreaded box on this shelf publishes 900 psi and names three machines

Best for: Thirty unthreaded cartridges at the lowest unthreaded price on this shelf, for a dispenser you already know fits

≈ $35
Check price on Amazon

Specifications

Type
Disposable CO2 cartridge — UNTHREADED
Neck
Smooth, unthreaded
Charge
16 g (0.6 oz)
Quantity
30
Price per cartridge
$1.17, on the published price and count
Gas
100% pure food-grade CO2
Sealing
Each cartridge individually sealed, leak-proof, stated zero CO2 loss in storage
Stated uses
Homebrew beer, soda makers, seltzers, beer keg chargers, keg taps, compact draft setups
Pressure
Not stated by the maker
Named compatible appliances
None — "a wide range of dispensers"
Warranty
Not stated by the maker
Amazon reference
B076NTQ1NS
EAN
0799632090861

What the maker puts in writing

  • 100% pure food-grade CO2 — for homebrew beer, soda makers and seltzers
  • Smooth, unthreaded neck, compatible with dispensers, mini keg systems and soda siphons designed for unthreaded chargers
  • For beer keg chargers, keg taps and compact draft setups
  • Each cartridge individually sealed · leak-proof · zero loss of CO2 during storage
  • 30 pack

The arithmetic for unthreaded dispensers

Two boxes on this shelf fit a piercing dispenser.

RedRock: thirty cartridges, $34.99, $1.17 each.

ICO: ten cartridges, $17.99, $1.80 each — with 900 psi published, two years of guarantee and three named machines.

Where the sealing claim stops

Zero loss of CO2 during storage.

A good claim, and no shelf life attached to it. The same shelf has a cartridge that publishes five years. RedRock says the seal is perfect and does not say for how long.

Availability

Read on the day this page was built: $35 at the American Amazon shop.

Read from Keepa on the day this page was last revised; stock and price both move without notice.

Prices quoted in this text were read on 2026-10-04. The live price is at the top of the page.

What readers ask us

RedRock or ICO for an unthreaded dispenser?

RedRock is $1.17 a cartridge and sells thirty; ICO is $1.80 and sells ten, with a published 900 psi, a two-year guarantee and three named appliances. If you already know your dispenser works with unthreaded 16 g (0.6 oz) cartridges, RedRock is the cheaper refill. If you are unsure, ICO tells you what fits.

What does "individually sealed" mean?

That each cartridge is packaged separately rather than loose in a box. The maker claims zero CO2 loss in storage as a result. No shelf life is published, so the claim has no duration attached to it.

Unthreaded or threaded?

This is unthreaded: a smooth neck that your dispenser pierces. Four cartridges on this shelf are threaded 3/8-24 instead and will not fit a piercing dispenser. Check the cartridge your machine came with.

More beer keg & capsule refills

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    Six 16-gram threaded food-grade CO2 cartridges with a 3/8-24 connection, for growlers and mini kegs.

    Type
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    Thread
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    Charge
    16 g (0.6 oz)
    Quantity
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    Price per cartridge
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    Gas
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    Shelf life
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    Warranty
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    Amazon reference
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    EAN
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    Compatibility
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    Volume
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    Beer
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    Compatibility
    Philips PerfectDraft dispensers only
    Deposit
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Elsewhere in the spares drawer

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    Sphere size
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    Marketing claim
    Marketed for producing clear ice cubes
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    Charging
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    Charge indicator
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    Included
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    Amazon reference
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    EAN
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    Type
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    Corks per charge
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    Corkscrew
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    Vacuum pump
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    Warranty
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    Amazon reference
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    EAN
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