Do these stretch over plugs while the wire is skinny and the plug is fat?

No, they don't stretch that much. I think its 2 to 1 ratio. I don't think it will work for you.

Are these flame retardant rated?

Retardant, yeah, fireproof, naw. I use a Bic lighter to seal mine up. Couple of seconds under the flame, bingo all done. Will they burn, yeah probably, if your battery pack explodes.

What is the listed voltage rating of this heat shrink?

I don't know as I was using it for low voltage.

Is this set free of adhesive? I need tubing that is not adhesive-lined.

These are adhesive free. They only require heat to shrink them to seal whatever you are sealing

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🛠️ Shrink it, seal it, secure it — the pro’s choice for flawless wiring!

VERSATILE 650 PIECE KIT - Eight sizes included to cover all your wiring needs—from delicate headphones to heavy-duty cables.
ORGANIZED READY TO USE - Comes in a sleek plastic case for easy storage and quick access—no more tangled messes.
DURABLE FLEXIBLE PROTECTION - Resists acid, alkali, aging, and extreme temps (-55°C to 125°C) for long-lasting wire security.
CERTIFIED SAFETY ECO FRIENDLY - UL-approved, RoHS-compliant tubing ensures your projects meet top safety and environmental standards.
PRECISION FIT WITH 2 1 SHRINK RATIO - Shrinks to half its diameter for a snug, professional-grade insulation every time.

The innhom 650pcs Heat Shrink Tubing Kit offers UL-approved, flame-retardant, and eco-friendly polyolefin tubing with a 2:1 shrink ratio. Designed for professional-grade insulation and protection, it features high tensile strength (14 MPa), operates across a wide temperature range (-55°C to 125°C), and includes eight sizes in a convenient storage case. Perfect for electrical, hobbyist, and tech applications demanding durable, flexible, and safe wire protection.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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TrustScore 4.5 | 7,300+ reviews

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Customer service was outstanding when I had questions about the product.

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Manufacturer	innhom
Part number	HS-650B
Item Weight	209 g
Package Dimensions	21.79 x 15.9 x 4.09 cm; 209 g
Item model number	HS-650B
Size	650pcs
Colour	Black
Material	plastic electrical heat shrink tubing
Item Package Quantity	1
Batteries included?	No
Batteries Required?	No

innhom 650pcs Heat Shrink Tubing Black Heat Shrink Tube Wire Shrink Wrap UL Approved Ratio 2:1 Electrical Cable Wire Kit Set Long Lasting Insulation Protection, Safe and Easy, Eco-Friendly Material

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