If the material is "copper", why is the color silver (like aluminum)?

They are tinned copper, not aluminum.

What are the exposed pin lengths

From approximately 0.24" to 0.47" long.

for 12 awg wire once crimped down. How large is the crimp end? Would it fit in the back of an A/V receiver that uses the spring back type terminals?

depends upon the spring lock connectors. i personally do not like to use a ferrule on the speaker wires.

I want to use these for clay cutters. Are all the metal ends of each color a different size? What is the size range from largest to smallest?

They are different sizes it. and it says in the description they are 24-10 AWG. So about 0.125 to 0.025 inches in diamerter https://www.calmont.com/wp-content/uploads/calmont-eng-wire-gauge.pdf

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Description

🔧 Elevate Your Electrical Game with 800 Ferrules!

EASY TO USE - Designed for effortless crimping and reliable electrical conductivity.
COMPREHENSIVE KIT - Includes 8 sizes to meet all your project needs.
ECO FRIENDLY CHOICE - 100% RoHS compliant for a greener future.
HIGH QUALITY MATERIALS - Crafted from durable copper and PVC for longevity.
VERSATILE CONNECTIVITY - Perfect for wiring machines, PLCs, and more.

The Sopoby 800PCS Wire Ferrules Kit offers a comprehensive solution for all your electrical projects, featuring a range of 8 sizes suitable for AWG 24-10 wiring. Made from high-quality copper and PVC, these ferrules ensure excellent conductivity and durability, while being 100% RoHS compliant for eco-conscious users.

Reviews

R**S

Buena calidad

9.10.2022

Y**S

Works well, double crimping may be required

They work well, I have a Weidmuller crumpet and it doesn’t mind these ferrules, though once I was able to pull one off the wire (24awg), so I’ve taken to crimping one side, and flipping over the ferrule to crimp the other side and so far, no issues.The case is lackluster but it does have latches that work and the fact that the ferrules are sorted is nice too.Overall, a good product for a decent price.

20.03.2019

T**S

Great Product, but not UL Listed for 508A panels

My only reason for not giving this 5 stars is because the product is not UL or CE listed. In the image shown the green ferrule came from the kit... and the yellow ferrule was purchased from Wago. Without looking at the packaging, they are basically indistinguishable. However, the Wago ferrule is UL listed where the one from the kit is not. Therefore, unless you want to risk having to rewire an entire panel, I would not recommend using these on equipment that needs to be UL or CE certified.

4.01.2022

N**T

Pretty good quality stuff

These are actually quite descent quality... better than i was expecting. I would like to see some different colors in the same gauge to allow for polarity indication when wiring speakers or such but overall good kit.

23.01.2020

E**K

As expected

They're ferrules, there isn't a lot to say - they seem to be on par with any other ferrules I've used. I'm using a 6-jaw, ratcheting self-adjusting crimper (about $20 on amazon) and these ferrules have worked just fine with it.If I have one small compliant, it's that it would be really nice if there were a label (perhaps on the inside of the lid) listing the mapping of sizes (color code) to wire gauge. If you're just doing a couple crimps or a lot of one size, it's not a big deal to find it by trial and error, but on a big project with lots of different wire gauges it can be annoying. I will end up labeling it myself, but it would be a nice touch if it came that way.

6.03.2019