What is the outer diameter of the insulation?

When separated, a single strand is .165 in. in diameter and together it measures .165 in. by .345 in.

It says 99% copper but looks like less conductive and cheaper copper clad aluminum. . Which is it?

I assumed it was as advertised: 99% copper. There are different grades of copper, so conductivity may well vary, but like you, I was looking for a step up from copper clad aluminum. Don't know for sure if I got it, but the cable is thick and my system sounds good with it.

Probably china. The wire feels very high quality. It’s soft and flexible, and I got fuller richer sound out my home theater after I rewired with this.

So are we getting 50ft of each =100ft or 100ft of each =200ft?

It's One 100ft spool of speaker wire.

Installgear 12 Gauge Speaker Wire 99 9 Oxygen Free Copper

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

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Description

🎧 Elevate your sound game with InstallGear’s pro-grade speaker wire!

TRUSTED BY THOUSANDS - Join over 2,800 satisfied customers who rate this cable 4.6 stars for reliability and performance.
PERFECT 30 FOOT LENGTH - Ideal for professional setups or home theaters, giving you the freedom to position your speakers exactly where you want.
PREMIUM SOFT TOUCH CABLE - Flexible and easy to install, this cable feels as good as it performs—no more frustrating bends or kinks.
ROBUST 12 GAUGE THICKNESS - Engineered for superior durability and optimal power handling, ensuring your audio setup performs at its peak.
CRYSTAL CLEAR AUDIO TRANSMISSION - Experience pristine sound with 99.9% oxygen-free copper wiring that minimizes signal loss and distortion.

InstallGear’s 12 Gauge Speaker Wire features 99.9% oxygen-free copper for superior conductivity and minimal signal degradation. The true spec, soft touch cable design ensures easy installation and durability over its 30-foot length, making it a top choice for audiophiles and professionals seeking crystal-clear audio performance.

Specifications

ASIN	B079VJXN1Z
Best Sellers Rank	#339,582 in Electronics ( See Top 100 in Electronics ) #56 in Speaker Cables #262,101 in Accessories (Electronics)
Brand	InstallGear
Brand Name	InstallGear
Colour	Brown
Customer Reviews	4.6 out of 5 stars 2,691 Reviews
Gauge	12.0
Global Trade Identification Number	00850075307142
Manufacturer	InstallGear
Material	Copper
Material Type	Copper
Model Number	IG1230OFC
No. of wires	1
Number Of Wires	1
Number of Cable Strands	1
Number of Items	1
Part Number	IG1230OFC
Strands	1
UPC	753968370868
Unit Count	1.0 Count

Reviews

R**A

Price high,but Quality Super

Great quality

15.07.2026

E**S

Mola que mola

Calidad premium en mi camioneta.

27.07.2026

J**C

excellent quality

30.06.2026

A**R

Clear specification

Good quality as specified. Will buy again

14.12.2020

M**O

Alta qualidade

Produto de excelente qualidade e acabamento. Entrega rápida. Era exatamente o que foi anunciado

29.06.2023

L**Y

great

great wire

31.12.2025

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