Does it come with insulator sleeve?

Mine came with one 4 years ago, but I never use it. If you let the CO2 out slowly, it doesn't get cold. And if you ride tubeless tires, you should let it out slowly.

A 16g CO2 cartridge is mentioned. Will it take a 20g or 25g threaded? 16g is meek for my 700x35s.

It should fit any threaded cartridge

Could someone please explain how the spare o-ring is a replacement for the original? It is much smaller than the one installed.

That's for a different size valve.

what is the small loose gasket in the package for?

it is a backup. the CO2 bike tire inflator already has one inside , you can change it with this backup one .

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CO2 Inflators

Product ID: 184190899

Details

Brand
COTOUXKER
Color
Red Silver
Item Weight
27.22 g
Material
Aluminum
Power Source
Handheld

⚡Ultra-fast inflation control

🛠️Precision CNC aluminum build

🚴‍♂️Presta & Schrader valve compatible

EC$58

Duties & taxes included

In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚴‍♀️ Inflate Fast, Ride Faster – Never Miss a Beat on the Road!

LEAK PROOF DURABILITY - CNC machined aluminum and brass internals ensure a secure, no-leak connection every time.
PRO GRADE RELIABILITY - Trusted by cyclists ranked #6 in Bike CO2 Pump Systems with a 4.3-star rating from 927 users.
COMPACT FEATHERLIGHT - Weighs just 27g and fits effortlessly in your jersey pocket or saddle bag.
RACE READY SPEED CONTROL - Control lever lets you dial in inflation speed to avoid freezing and overpressure.
UNIVERSAL VALVE COMPATIBILITY - Works seamlessly with both Presta and Schrader valves for all your road and mountain bikes.

The CO2 Bike Tire Inflator by COTOUXKER is a precision-engineered, lightweight aluminum pump designed for rapid, controlled inflation of both Presta and Schrader valves. Featuring a CNC-machined body with brass internals and a control lever for adjustable CO2 release, it ensures leak-free, freeze-safe inflation on the go. Ideal for road and mountain cyclists seeking a compact, reliable inflation solution during races or group rides.

Specifications

ASIN	B0821L3GPY
Best Sellers Rank	#21,434 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #6 in Bike CO2 Pump Systems
Brand	COTOUXKER
Brand Name	COTOUXKER
Color	Red, Silver
Customer Reviews	4.3 out of 5 stars 928 Reviews
Item Weight	27.22 g
Manufacturer	Homelae
Manufacturer Part Number	HL066
Material	Aluminum
Material Type	Aluminum
Model Number	HL066
Number of Items	1
Operation Mode	Manual
Power Source	Handheld
UPC	779207160878

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