Relaxweex Copper Tubing Extension Kit 4 x 4m (1/4", 3/8", 1/2", 5/8") PET‑sheathed, kink‑resistant

Relaxweex 4pcs 4 M Conditioning Copper Tubing Pipe Extension Kit supplies four PET-sheathed copper lines (1/4", 3/8", 1/2", 5/8") at 4 meters each for on-site bending, cutting and HVAC connections.

This kit is built for installers, technicians and informed DIYers who need ready-to-use copper tubing extensions that resist kinks and simplify refrigeration or air-conditioning runs. Each length uses a PET outer layer to protect the copper core, and the set includes the four most common diameters so you can match fittings without improvising. The design emphasizes field flexibility: bend where you are, cut to length, and keep work organized with color-coded sleeves for fast identification.

How does this copper tubing kit simplify installation on-site?

Relaxweex pre-cut 4 m strips eliminate repeated trips to the shop and reduce joint counts when you can run longer continuous lengths. The PET sheathing protects the copper during handling and routing and helps prevent accidental kinks. Color-coding speeds size selection so crews can work faster under tight schedules.

• Four 4-meter strips reduce the need for splicing and extra fittings.
• Durable PET outer layer minimizes abrasion and handling damage.
• Color-coded diameters make size matching quick and error-resistant.

What sizes are included and when should each be used?

The kit includes 1/4", 3/8", 1/2" and 5/8" tubes — the sizes most commonly specified in residential and light-commercial HVAC systems. Choose the diameter based on manufacturer piping charts and refrigerant flow needs; smaller lines suit low-flow connections, larger tubes for service and main runs. Keeping all four on the truck covers most practical scenarios so you won’t be held back by missing sizes.

• 1/4" for small service lines or sensing tubing.
• 3/8" commonly used for split-system liquid lines.
• 1/2" for higher-capacity lines or shorter pressure-sensitive runs.
• 5/8" for main supply or larger system applications.

Can I bend and cut these lines safely in the field?

Yes — the tubing is formulated for on-site bending and trimming without sacrificing line integrity when done with proper tools and technique. The copper core remains malleable for tight routing, while the PET jacket keeps the outer surface intact through bends. As always, use a tubing bender for controlled radii and a quality cutter for clean ends to ensure leak-free brazing or flare connections.

• Designed for field bending with standard tube benders.
• PET jacket protects against nicking during routing and handling.
• Trim with a rotary cutter for smooth, square ends ready for fittings.

How does this kit help reduce installation errors and save time?

Color-coded tubes and a complete range of diameters reduce size-matching mistakes that lead to rework. Longer continuous lengths mean fewer joints, fewer potential leak points, and faster runs. The PET reinforcement also reduces damage during transport and staging, which lowers the chance of on-site delays replacing compromised sections.

• Fewer fittings and joints cut installation time and potential leak points.
• Color coding speeds identification under job-site conditions.
• PET sheath lowers handling damage and subsequent rework.

Who is this for: The Relaxweex 4pcs 4 M Conditioning Copper Tubing Pipe Extension Kit is tailored to HVAC contractors, refrigeration technicians, maintenance teams, and capable DIY installers who need dependable, multi-size copper lengths ready for field bending, cutting and connection. It’s ideal when you want to reduce splices, keep work organized with color-coded sizes, and use PET-sheathed tubing that withstands rough handling while maintaining reliable copper performance.