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 inflator

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

$39.21

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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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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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$39.21

Duties & taxes included

In stock

Sold byAmazon EcuadorDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Ecuador.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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