127-Piece Black Heat Shrink Tubing Set | 7 Sizes Polyolefin

127-Piece Black Heat Shrink Tubing Set – 7 Sizes for Every Wire & Cable Job

Keep your wiring projects neat, protected, and professional with this comprehensive 127-piece black polyolefin heat shrink tubing assortment. Spanning seven carefully selected diameters — from fine 2mm wires up to chunky 13mm cables — this all-in-one kit has you covered for electronics repair, automotive wiring, DIY projects, and general cable management.

What's in the Kit?

• φ2.0 × 40mm — 30 pcs
• φ2.5 × 40mm — 25 pcs
• φ3.5 × 40mm — 20 pcs
• φ5.0 × 40mm — 20 pcs
• φ7.0 × 80mm — 16 pcs
• φ10 × 80mm — 8 pcs
• φ13 × 80mm — 8 pcs

Total: 127 pieces packed conveniently in one resealable bag.

Key Features

• Uniform shrinkage: Shrinks evenly around your wire or connector for a clean, snug fit every time.
• Excellent heat resistance: Made from durable, high-quality polyolefin (PE) that stands up to operating temperatures.
• Strong insulation: Creates a reliable electrical insulation barrier to protect connections from moisture, abrasion, and short circuits.
• High strength & flexibility: Tough enough to resist wear, yet flexible enough to avoid cracking or distorting over time.
• Simple to apply: Use a heat gun, hair dryer, or lighter — the tube shrinks quickly and easily, no special tools required.
• CE Certified: Tested and compliant with CE safety standards for your peace of mind.

Ideal For

• Electrical & electronics repairs
• Automotive and motorcycle wiring harnesses
• DIY hobby projects and circuit building
• Cable bundling and labelling
• Connector and terminal insulation

Material & Certification

Material: Polyolefin (PE) | Certification: CE | Made in China

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External Reference

For electrical safety best practices when working with wiring and insulation materials, visit the OSHA Electrical Safety Guidelines.

Frequently Asked Questions

Q: What heat source do I need to shrink the tubing?

A: Any consistent heat source works — a dedicated heat gun is ideal, but a hair dryer set to high heat or even a lighter held at a safe distance will activate the shrink. The polyolefin tubing shrinks quickly and evenly, so the process is fast and straightforward.

Q: What is the shrink ratio of this heat shrink tubing?

A: This set uses a standard 2:1 shrink ratio, meaning each tube will shrink to approximately half its original diameter when heat is applied. This makes it suitable for a wide range of wire gauges and connector sizes within each diameter range.

Q: Is this heat shrink tubing suitable for outdoor or automotive use?

A: Yes. The polyolefin material offers good resistance to moisture, abrasion, and general environmental exposure, making it a solid choice for automotive wiring harnesses, marine applications, and outdoor electrical connections.

Q: How many pieces and sizes are included in the set?

A: The kit contains 127 pieces total across 7 different diameters: 2.0mm, 2.5mm, 3.5mm, 5.0mm, 7.0mm, 10mm, and 13mm — all in black — so you always have the right size on hand for the job.