why do you crimp the connector 3x? One for each wire, what is the 3rd?

I’m not sure why you have to crimp 3x’s unless their tool is designed that way? I only crimped twice in my engine compartment of my pickup and have had no issues.

Will these work for 10/2 wire at 230V and 20 amps?

You should be able to use on 230 volt 20 amp. The yellow should handle 30 amp minimum. Usually if the wires fit in it. It will work

Do you have the Butt connectors that are 12-10 on one end and 16-14 on the other

No, they are the same on each end. The colors indicate the size, as well they are labeled.

Can these be submerged? I want to use them for a bilge pump.

Yes you can, the discription of the product says they are Marine Grade Waterproof Wire Connectors.

Heat Shrink Connectors | Desertcart Uruguay

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Description

🔌 Seal the deal with every crimp—connect like a pro, waterproof like a boss!

COPPER CORE POWER - Thick, tinned copper core ensures superior conductivity and long-lasting, corrosion-resistant connections.
TRUSTED BY THOUSANDS - 4.8-star rating from 4,600+ pros who demand reliability in automotive, marine, and industrial wiring.
MARINE GRADE DURABILITY - ROHS, ISO 9001, SGS & CE certified connectors built to withstand harsh environments and keep your projects leak-proof.
UNIVERSAL FIT INSTANT CONFIDENCE - 4 color-coded sizes (22-10 AWG) for quick, precise wire matching—no guesswork, no downtime.
HEAT SHRINK TECH WITH HOT MELT ADHESIVE - Translucent tubing with strong tensile strength and inner adhesive guarantees a waterproof, slip-free crimp every time.

The Haisstronica 330PCS Heat Shrink Butt Connectors kit offers a comprehensive, marine-grade solution for electrical splicing with 4 color-coded sizes (22-10 AWG), certified compliance (ROHS, ISO, SGS, CE), and a durable copper core. Featuring translucent heat shrink tubing with hot melt adhesive, these connectors ensure waterproof, corrosion-resistant, and mechanically robust wire joints ideal for boats, trucks, and stereo systems.

Specifications

ASIN	B07Q3JJRY8
Best Sellers Rank	54,788 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 53 in Butt Terminals
Brand	haisstronica
Colour	Blue Yellow Red White
Connector Gender	Male
Connector Type	Butt Splice
Connector type	Butt Splice
Contact Material	Copper
Contact material	Copper
Customer Reviews	4.8 out of 5 stars 4,785 Reviews
Gauge	1
Insulation Material Type	Nylon
Insulation material	Nylon
Item Dimensions L x W x H	20L x 20W x 20H millimetres
Manufacturer	haisstronica
Manufacturer Part Number	HX1045
Material	Polyolefin
Maximum Voltage	400 Volts (AC)
Model Number	HS
Number of Items	330
Specification Met	CE
Terminal	Butt Terminal
UPC	192687298006

Reviews

N**B

I was sceptical

These work a treat, very happy

14.12.2025

N**L

Good quality

Great quality and work well

20.11.2025

J**Y

Heat shrink connectors

Good product well made and priced.

20.11.2024

N**G

GREAT

GREAT MANY THANKS

31.07.2025

R**O

Buen producto

Todo es correcto

24.01.2025

J**L

plutôt pour des gros fils

Il vaut mieux bien insister pour sertir sinon ça ne tient pas.

1.08.2025

A**X

Top Preis Leistung

Sehr guter Preis und Qualität

20.10.2025

M**.

Better than expected

Really appreciate the results, seems solid and shrink around the wire perfectly

21.08.2024

S**Y

Quality, multiple sizes, shrink well.

These are great, with multiple sizes. Working on our camper and odds n ends around the house. These came in handy for electrical work. They shrink very well and great quality.

1.05.2026

Common Questions

Are the products genuine and authentic?+

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.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews

Heat Shrink Connectors

Details

Details

Description

Specifications

Reviews

Common Questions