Are these terminals made of tinned copper?

Yes, they are made of tinned copper and thick enough to do job. It also uses polyolefin, double wall, adhesive lined tubing.

Is there ribbs on the inside of the barrel or is it smooth?

They are smooth. There's a tab on the inside to stop the wire from going all the way through. If crimped right and heat shrunk they won't pull apart

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

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540PCS Marine Grade Heat Shrink Wire Connectors of Tinned Red Copper

Product ID: 407841052

Details

Color
Red
Connector Type
Butt Splice
Contact Material
Copper
Insulation Material
Polyolefin
Terminal
Butt Terminal

🌊marine-grade waterproof

🔥3:1 heat shrink ratio

🛠️540PCS versatile kit

€ 111.50

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Connect with confidence—power up your projects like a pro!

COMPLETE 540 PIECE KIT - All essential connectors in one sleek, organized set for every wiring challenge.
MARINE GRADE DURABILITY - Built to withstand harsh environments—perfect for professional-grade projects.
3 1 HEAT SHRINK TECHNOLOGY - Adhesive-lined connectors create a waterproof, wear-resistant seal that lasts.
CERTIFIED QUALITY ASSURANCE - ROHS, ISO 9001, SGS, and CE certified for peace of mind and reliability.
PREMIUM RED COPPER CONDUCTIVITY - Ensures superior electrical flow with minimal voltage drop for flawless performance.

The Sopoby 540PCS Marine Grade Heat Shrink Wire Connectors kit offers a comprehensive selection of tinned red copper terminals including ring, fork, spade, and butt splices across AWG 22-10 gauges. Featuring 3:1 adhesive-lined heat shrink tubing, these connectors provide waterproof, corrosion-resistant, and reliable electrical connections ideal for marine and industrial applications. Certified to ROHS, ISO 9001, SGS, and CE standards, this kit ensures professional-grade quality and durability for all your wiring needs.

Specifications

Asin	B09JWH1ZQR
Best Sellers Rank	#12,276 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #82 in Butt Terminals
Brand Name	Sopoby
Color	Red
Connector Gender	Male
Connector Type	Butt Splice, Crimp, Fork, Ring, Spade
Contact Material	Copper
Customer Reviews	4.6 4.6 out of 5 stars (1,310) 4.6 out of 5 stars
Insulation Material Type	Polyolefin
Item Dimensions L X W X H	10.8"L x 6.9"W x 1.8"H
Manufacturer	Sopoby
Material Type	Copper
Maximum Voltage	12 Volts (DC)
Model	Amazon-Sop-1100US
Number Of Items	1
Part Number	Amazon-Sop-1100US
Specification Met	RoHS
Temperature Rating	['257 degrees Fahrenheit']
Terminal	Butt Terminal
Unit Count	1 Count

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