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Streamline your wiring projects
With the ultimate reliability of INSCOOL’s Heat Shrink Butt Connector Set. Whether you’re a professional electrician or a DIY enthusiast, these connectors are designed to ensure a strong, durable, and weatherproof bond for your wire connections. Each connector features color-coded tubing for easy identification, with an array of sizes to accommodate various wiring needs. The polyolefin tubes in an assortment of colors - yellow, red, blue, and white - provide a secure hold with a heat-activated adhesive lining, ensuring a seamless and corrosion-resistant seal. With INSCOOL’s connectors, you’re not just making connections; you’re engineering a fail-safe circuitry that stands the test of time. These connectors are perfect for automotive, marine, and home wiring applications. Your electrical connections will never be the same once you experience the security and simplicity of our heat shrink butt connectors. Make the smart connection and choose INSCOOL for a hassle-free, dependable electrical bond that powers your projects to perfection.
Wide Applications
Versatility :
Suitable for various wire connection needs, from automotive to marine, and home wiring projects.
Durability :
Manufactured from high-quality materials that ensure long-lasting connections even in harsh environments.
Waterproof :
Features a waterproof seal that prevents corrosion, ensuring safety and reliability for any electrical connection.
Ease of Use :
Simple one-step wire connections make installation quick and efficient, saving time and hassle.
Chelsea Hamblin
August 7, 2025
The media could not be loaded.
sanjuan
August 3, 2025
Fit the purpose fine.
R
August 2, 2025
I was skeptical of the quality when ordering because of how much cheaper they are versus the small packs at the auto parts stores but was very impressed when I used them to wire up some lights and a switch panel!
James Bammerlin Jr
July 26, 2025
These are the good heat shrink butt connectors. This is good good valve than the alternative of buying them at the parts store.
Doug
July 14, 2025
nice product
vincent monti
June 30, 2025
How to wire up electrical and how to use product
Gary Teegardin
June 22, 2025
Good value
Mike
June 5, 2025
Very happy with these butt connectors. Very easy to crimp and the heat-shrink works as intended with some heat applied. Just be sure to use a good quality crimping tool and you won't be disappointed. I only needed the 22-16 sized connectors, but nice to get a variety of sizes in case they are needed in the future.
Dan M
June 2, 2025
Good product. Great for the shop.
darren g.
May 26, 2025
works perfect
Cornelius Benedict
May 16, 2025
Have used these a few times and no complaints.
TH
December 21, 2024
I bought a NAPA auto part that came with two butt connectors included. As I was making my last crimp, the wire slipped out of the connector (my error). I bought this kit to replace that connector.I will acknowledge that there is one image in the listing for this item that says "crimp with a professional crimper" and shows a vice-style crimping tool. I went ahead anyway with my multitool's crimper, which had no trouble with the connectors that came with the auto part, that I assume are more of a "commercial grade". Crimping the NAPA connectors required a decent squeeze. The Amazon connectors required very minimal pressure, and didn't feel like I was really pressing down on the wire.The first 2 attempts, the wire just pulled right out of the crimp. I was following instructions I found online to crimp between the mark in the middle of the connector and the wide part of the connector. However, on the third connector, I crimped right before the wide end of the connector (right at the end of the metal tube) and the joint held up to tugging. This was for a red connector with a 16 gauge wire, which is the largest wire that the red connector is intended for.So I can't give any experience on whether these work flawlessly with a "professional" crimper, they did not work as consistently as the NAPA connectors with a multi-tool crimper. Both ends crimped properly once I figured out to crimp right at the end.
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