When you say; "Copper Tube Diameter 3/8" (9.53mm)," are you referring to outside diameter?

As for the AC copper pipe, We think the diameter would refer to pipe outside diameter. That is to say, Pipe outside diameter 9.52mm or 3/8 in., 15.88mm or 5/8 in..

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🔧 Connect with Confidence — Upgrade Your AC Setup in Minutes!

READY TO USE PACK - Includes 2 solid brass connectors and 4 flare nuts—everything you need to extend your copper pipes instantly.
BRASS BUILT TO LAST - Crafted from corrosion-resistant, anti-rust heavy-duty brass for long-term reliability.
NO WELDING NO HASSLE - Eliminate the need for welding—install easily with just a wrench and household tools.
VERSATILE APPLICATION - Ideal for AC systems, refrigeration, plumbing, fuel, gas, and vacuum setups—one connector, endless uses.
PERFECT FIT EVERY TIME - Engineered specifically for 3/8" copper pipes ensuring seamless, leak-proof connections.

These 2-pack 3/8" AC copper pipe extension joint connectors are precision-engineered from 100% heavy-duty brass, offering corrosion resistance and durability. Designed for quick, welding-free installation, they fit perfectly on 3/8" copper pipes and come with flare nuts for secure tightening. Perfect for HVAC, plumbing, fuel, and refrigeration applications, these connectors simplify pipe extension projects with professional-grade reliability.

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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.

€ 33.46

Duties & taxes incl.

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TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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Size	3/8", 2Packs
Material	Brass
Brand	Timsec
Color	Copper
Connector Type	Coupling
Thread Size	['0.375 inch']
Exterior Finish	Brass
Thread Type	NPT
Item Weight	0.1 Kilograms
Number of Pieces	2
Manufacturer	Timsec
Item Weight	3.52 ounces
Package Dimensions	4.09 x 2.44 x 0.83 inches
Measurement System	inch, metric
Batteries Included?	No
Batteries Required?	No

2Packs AC Copper Pipe Extension Joint Connectors, 3/8-Inch Air Conditioning Pipe Coupling Adapters with Flare Nuts and Connectors, Free Welding, For Butt Copper Tube Diameter 3/8" (9.53mm)

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