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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COTOUXKER

Product ID: 256251532

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Details

Colour
Silver and Red
Brand
COTOUXKER
Material
Aluminum
Item weight
0.06 Pounds
Power source
Manual (CO2

⚡Fast inflation in seconds

🔩CNC machined aluminum precision

🚴‍♂️Universal Presta & Schrader valve fit

Description

🚴‍♀️ Pump up your ride, not your wait time!

RACE READY SPEED - Inflate your tire in seconds—never miss a beat on group rides or races.
TOOL FREE OPERATION - Simple, intuitive design for quick inflation when every second counts.
COMPACT LIGHTWEIGHT - Slip it in your jersey pocket or saddlebag without weighing you down.
PRECISION ENGINEERING - Durable CNC aluminum parts ensure a leak-proof, secure connection every time.
UNIVERSAL VALVE COMPATIBILITY - No valve head switching needed—works seamlessly with both Presta and Schrader valves.

The COTOUXKER CO2 Bike Tire Inflator is a compact, lightweight, and precision-engineered pump compatible with both Presta and Schrader valves. Crafted from durable CNC machined aluminum, it delivers fast, reliable inflation using threaded CO2 cartridges—ideal for road and mountain bikers who demand speed and convenience on every ride.

Specifications

Color	Silver and Red
Material Type	Aluminum
Power Source	Manual (CO2 Cartridge)
Batteries Included?	No
Brand	COTOUXKER
Manufacturer	Homelae
Item model number	HL066
Package Dimensions	8.89 x 6.3 x 1.9 cm; 25 g
ASIN	B0821L3GPY

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