Tnisesm Copper Tubing Bending Strip Kit 4pcs (1/4, 3/8, 1/2, 5/8) 4m Color‑Coded PE Reusable

The Tnisesm 4-piece copper tubing bending strip kit provides color-coded, 4-meter PE strips to guide clean, kink-free bends in 1/4", 3/8", 1/2" and 5/8" air-conditioning copper pipes.

This kit includes four long, flexible PE bending strips—each matched to a common HVAC copper tube diameter—so you can shape internal pipeline runs without crushing or creasing the tubing. Designed to be used inside the tube while forming elbows, the strips support smooth flow paths and reduce the risk of damage during installation or maintenance. The simple color-coding speeds up size selection on the jobsite and the generous length covers multiple bends and extended runs.

How do these bending strips protect copper tubing during installation?

The bending strips act as internal supports that distribute bending forces evenly along the tube, preventing local pinch points and kinks. By occupying the tube interior while you form the elbow, they preserve the tube profile and maintain internal diameter where airflow and refrigerant flow matter.

• Internal support prevents crushing and local deformation
• Preserves internal bore for efficient refrigerant passage
• Reusable PE construction withstands repeated bends

Which tube sizes are included and how are they identified?

The set contains four strips sized for standard HVAC copper tubing: 1/4", 3/8", 1/2" and 5/8". Each strip is color coded—red, green, yellow and blue—so you can quickly pick the right profile for the diameter you’re bending without measuring every time.

• Red: 1/4" strip for smaller refrigeration lines
• Green: 3/8" strip for common evaporator or liquid lines
• Yellow: 1/2" strip for larger service lines
• Blue: 5/8" strip for heavier-duty tubing

How much material is provided and what projects does it suit?

Each strip runs four meters (about 13 feet), giving ample length for multiple bends, long elbows, or several short runs per job. That length makes the kit useful for household HVAC installs, commercial maintenance, car air-conditioning repairs, and DIY refrigeration work where several bends or repeat use are expected.

• 4 meters per strip accommodates extended runs and many bends
• Enough material for repeated onsite use and spare lengths
• Useful for both single installations and routine service tasks

What is the material and durability like for repeated use?

Manufactured from flexible polyethylene (PE), these strips combine pliability with toughness so they conform inside bends and resist tearing. Their build tolerates multiple bending cycles while retaining shape, enabling technicians to reuse strips across jobs until wear requires replacement.

• PE plastic balances flexibility with long-term strength
• Holds form during bending, then releases cleanly from tubing
• Resists cracking and retains integrity through many uses

Who this kit is for: The Tnisesm 4-piece bending strip set is aimed at HVAC technicians, refrigeration installers, and competent DIYers who need a reliable, low-cost way to form elbows without damaging copper tubing. If you frequently make on-site bends, service air-conditioning lines, or want to keep tubing flow profiles intact during maintenance, this kit provides a simple, color-coded internal guide that speeds work and reduces installation mistakes. Not intended as a substitute for specialized pipe-bending machines where precise radius control is required, it excels at protecting tubing and improving bend quality in everyday HVAC and refrigeration tasks.