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

⏱️Precision control lever for regulated CO2 release

⚙️CNC machined aluminum & brass internals

🚴‍♂️Compatible with Presta & Schrader valves

186458Ar

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Description

🚴‍♀️ Inflate Fast, Ride Faster – Never Get Left Behind!

COMPACT POWERHOUSE - Ultra-lightweight and pocket-friendly design that fits seamlessly into your cycling kit.
LEAK FREE CONFIDENCE - Engineered CNC aluminum parts ensure a secure, no-leak connection every time.
RACE READY RELIABILITY - Trusted by pros for fast, efficient inflation during races, group rides, or timed events.
RAPID INFLATION MASTERY - Inflate your tire in seconds with precision control—never miss a beat on your ride.
UNIVERSAL VALVE COMPATIBILITY - Works flawlessly with both Presta and Schrader valves—one inflator for all your bikes.

The CO2 Bike Tire Inflator by COTOUXKER is a precision-engineered, CNC machined aluminum inflator compatible with both Presta and Schrader valves. Lightweight at just 27g, it features a control lever for regulated CO2 release to prevent freezing and ensure fast, leak-free inflation. Ideal for road and mountain bikes, it’s the perfect race-day essential for quick tire inflation on the go.

Specifications

ASIN	B0821L3GPY
Best Sellers Rank	#23,961 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #9 in Bike CO2 Pump Systems
Brand Name	COTOUXKER
Color	Red, Silver
Customer Reviews	4.3 4.3 out of 5 stars (924)
Item Weight	27.22 g
Manufacturer	Homelae
Manufacturer Part Number	HL066
Material Type	Aluminum
Model Number	HL066
Number of Items	1
Operation Mode	Manual
Power Source	Handheld
UPC	779207160878

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