Worth the extra dollars

These things are game changers. They make things nice and neat and keeps your wire from breaking when you tighten down set screws.

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Great

Work like they should. No complaints.

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Install Bay Ferrules

Quality product!

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Don't Fit TRUE 1/0AWG Wire!

They don't fit! These DO NOT fit TRUE 1/0AWG Copper wire! They may fit the cheap 1/0-Gauge CCA or lesser expensive 1/0-Gauge "OFC" wire, but NOT true 1/0AWG. This is NOT Crutchfield's fault as this stuff is the only thing anyone can get ahold of anymore. If the wire says "n-Gauge" or simply "n-Ga", then it does NOT conform to the American Wire Gauge (AWG) standard and more than likely does not conform to the CTA-2015 standard for mobile electronics power cabling. Only wiring/cabling that actually says "nAWG" is TRUE 1/0 wire! The "Gauge" stuff only specifies the OUTER INSULATION diameter and does NOT specify the conductor diameter. 1/0-Ga wire could be as small as 4AWG so of course these will fit the undersized wire they are used to! These don't fit either the conductor diameter NOR the insulation diameter of a true 1/0AWG copper CTA-2015 compliant wire. I had to cut 2 bundles of strands of wire out AND snip the plastic collar to allow it to spread over the insulation, then use electrical tape to secure/insulate it and apply a zip-tie to keep it from unraveling because I can't find any heat shrink that fits 1/0AWG wire. I am using MESA 1/0AWG wire. The 4AWG ferrules BARELY fit the 4AWG MESA wire as well. I had to twist the ferrule while installing to get it to go on to the wire. Pretty sad that you can't find a nice ferrule that properly fits the REAL AWG these days! PLEASE understand that I am NOT blaming Crutchfield for this. UPDATED 1/15/22: I wrote another review before on these when using MESA 1/0AWG wire and I decided to give them another shot with other wire, but the problem still exists. These WILL NOT fit 1/0AWG wire and will ONLY fit the cheap 1/0 "Gauge" or "Ga" wire, either copper or CCA. I have attached pictures showing them on both Crutchfield and NVX 1/0AWG CTA-2015 (CEA-2015) compliant wire. The plastic sleeve just will not fit over the insulation and I doubt the metal ferrule will fit over the conductor either, just as it was with the MESA wire. Unfortunately these are the ONLY 1/0 ferrules available for purchase! So, I have two choices. I can slit the plastic sleeve to get it to somewhat fit while using electrical tape and a zip tie to secure the tape and also trim off a couple bundles of wire strands or just use them without the ferrule, but that creates a very unprofessional look. Attached are pictures showing just how much smaller they are. It's a shame that there is nothing suitable for purchase anymore!

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Did not receive

I'm sure these are a great product that I I ordered but it wasn't in the package I received.

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Install Bay Ferrules

Perfect for a clean install

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Install Bay Ferrules

Excellent product easy install

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Game-changer

I know people like to throw around the term "game-changer" quite a bit but, this is one of those products. I don't know when they were released or how many people have used them and I don't care. If you're not using them, you are making life more difficult for yourself. No more stray wires that will eventually touch a ground. No more fighting power wire. It's so simple yet so effective. I will not install another amplifier without using these ferrules. No ifs ands or buts about it.

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Install Bay Ferrules

Works as advertised

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Install Bay Ferrules

Great to have

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Install Bay Ferrules

Great bang for the buck.

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Install Bay Ferrules

Great product

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Professional quality installations require the use of ferrules

Ferrules are a must have especially if you're dealing with heavy gauge finely stranded wire such as 4 gauge power cable. Ferrules aid in getting all the strands aligned into the connector. Of course ferrules are used only for compression connections.

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Great product

Keeps it clean. First time seeing these and using and wish I knew about them earlier. Stops you from jabbing copper strands into your finger tips trying to get that last rouge strand where it needs to be.

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Highly recommend using.

Highly recommend using these with aps. It makes the install much cleaner and the gauge size is a perfect fit.

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Using the Wire Ferrules

I've used these type Ferrules for all different sized Wire Gauges -- Superb professional connection to insert the stripped wire end fully inserted to the end of the metal tube part and slightly crimping the metal tube of the Ferrule next to the Nylon Base just to hold it steady while then wicking in Solder from the open end - The Copper wire wicks it right up and results in a rock solid connection. Also good idea to use a dab of Lock-tite on the interface connection hold-down screw which holds the Ferrule into the electronic component connection point. Those Low frequency Subharmonic sound waves can actually loosen screws over time ! (don't ask me how I know this ! haha )

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Do Homework Before Purchasing

Ferrules are a smart way to polish off a good install. They look cleaner than just jamming wires into amplifier inputs, and they keep individual strands of wire contained, so there's less chance they'll fall off or come in contact with another piece of metal. These ferrules were true awg 14 gauge & good quality. Each comes with insulation pre-installed, so you simply crimp & go. My only advice is to consider your particular install when ordering ferrules. They come bare or insulated, and they're also offered in different barrel lengths. MEASURE the depths of your amplifier input channels BEFORE you decide; some ferrules aren't long enough for the amp's screws to effectively clamp onto. Get the proper length barrel. Also; insulated ferrules tend to "shorten" the amount of barrel you can actually insert into the amplifier input, so take that into account as well. Finally; use ferrules ONLY if your equipment has traditional, circular-style inputs with a Set Screw. EXAMPLE: I installed ferrules on the wires going into my new JL Audio XD amplifiers - these amps have square style inputs with a clamping plate instead of set screw, and DO NOT work very well with ferrules. I've had several of the clamping plates break & fall out of the amplifier when I loosen them to remove/reposition my wires.

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Very handy ferrules

Work like a charm!

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Perfect

Great product. I ordered more of the same.

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Install Bay Ferrules

If you are a neat freak and safety minded get these ASAP, my install looks a lot more professional and they are simple too use. As for the speaker wire I made a good choice

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Makes for much cleaner installs

These work very well for their intended purpose. My only gripe is a minor one. I would love to see the crimp tube a little longer. I had to reposition one after partially tightening the screw and it barely grips the tip of it on my Kenwood amp due to the diameter of the plastic ferrule.

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Install Bay Ferrules

I'm not a professional installer but these made my install look clean and neat definitely will continue to use these on all my installs from now on.

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Install Bay Ferrules

Best way to wire your stereo

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Install Bay Ferrules

Ascetically completes the install while guaranteeing your connections.

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Install Bay Ferrules

Works

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Install Bay Ferrules

These are awsome stops the fray and loose wires

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Just what I wanted.

Nice add for your install. Cleaned things up a bit at the amp connection and eliminated those pesky stray wires.

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A must

Ferrules are a must have to make sure that you do not have any stray wires when installing

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Cleaned up the install

I have three different brands of wire and this fit all three brands perfectly and makes a beautiful crimp connection

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Install Bay Ferrules

They work

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Install Bay Ferrules

Great quality!

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Good product

Works just as described

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Install Bay Ferrules

These ferrules fit over the stripped end of the 4 gauge power wires. It keeps those errant wire strands together and off the other nearby connections. The wires now can be inserted into the binding post on the amp. When the binding post screw is tightened it crushes the ferrule onto the wire and makes a secure connection. The small wires of the 4 gauge cable are not broken by the clamping screw and it looks so clean and professional!

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Worked in a snap

They did the job

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Great!

These are great! Must buy!

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Nice appearance

Makeshooking up wires easy

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Install Bay Ferrules

easy to install work great

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Install Bay Ferrules

These are a pretty simple product that really adds the finishing touches to a nice car audio build. They don't come close to fitting KnuKonceptz kolossus flex wire. I ended up trimming about 25% of the wire off to get these to fit, decided that I didn't want to reduce the thickness of the wire that much so I never used them.

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Amp ferrules

1st time using these, they made my install look cleaner, they were easy to install, use the set screw to pinch the wire in place, will buy again

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Install Bay Ferrules

Perfect. This gives you a clean connection. I use this with my r2 500.1

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Install Bay Ferrules

These are a must have

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