SELTERM 8 AWG 1/4" Stud (2 pcs.) UL Heavy Duty Battery Ring Terminal 8 Gauge Connector, Tubular Electrical Wire End Cable Lugs, Bare Copper Eyelets [B3], MD0814U / MDS0814U

If you're looking at these for car audio, 0 gauge 5145 strand ofc wire, THAT IS AN OVERSIZE WIRE! You need these 2/0 guage terminal lugs to fit that wire. I wish someone would have told me this, i had to figure it out for myself.THESE ARE ABSOLUTELY PERFECT for car audio applications offset foot pad allows it to lay down flat. And if you got more than one going to a bolt and there's room you can put the foot cats back to back and they still lay down flat on each other. HIGHLY RECOMEND the adhesive lined shrink tube to use with this also HIGHLY RECOMEND getting using the hydraulic crimper not a hammer crimper. The hydraulic crimper makes you crimp look clean and professional. I got the 16 ton. The $50 i spent on that crimper was money well spent because of how easy it is to use and how much crimping force it exerts on the lugs. And when you're done with your project you can rent it out to your friends and get your money back!

I have purchased a few different brands and they all ended up being pretty cheap. If you are looking for nice thick copper connectors, then these should do the trick. They crimp just fine and provide a solid connection. Add with them some adhesive shrink tubing, and you'll have a connection that will last.I purchased the version for 6AWG wire which fit perfectly with the wire I have.Pros:Nice thick copperStill easy to crimpPlenty of copper left around bolt holeEasy flared end to help with getting wire into holeCons:None

While not quite superconducting, my fusion reactor did put out a few more millions of neutrons a second after I used these in my prime off-grid solar system. (And I'm not even making that up...)

Review for bare copper 2/0 awg lugs and 4 awg lugs.The good:Made from decently thick copper tubing (.045" wall for the 2/0 awg and .035" for the 4 awg.) Which means that there is enough material to hold the hex crimp well past the mil spec AND nasa pull test ratings. (Buy a hex crimper and stop using those impact 'dimpler' things.)Closed construction. Once crimped, simply cover with a dual wall adhesive shrink tubing and the cable is protected from corrosion.Nice large pad for good clamping surface.The bad:None really. Will buy again when needed.Addendum: If you are used to working with tweco brand lugs for 2/0 awg cable, there IS a huge size difference between those and the selterm lugs. See photo. Top is tweco. Bottom is selterm. Both perform well though and are just a heads up - not a product quality comparison.

I ordered these to fit on fuse panel that I installed inline of an auxiliary 12V system in my RV. The fuse panel input studs were metric and 1/4" ring terminals left a little too much space for my liking. It took quite a bit of searching but I was able to find these that accept 8 gauge wiring. While I could have used 1/4" ring terminals the fit on the stud with these is much better than 1/4".They crimped easily enough with a hand held ratcheting crimper and I was not able to pull them off by hand. The copper is plenty thick enough for anything at 40A or below.I checked to see if had any voltage drop through the terminal and it was dead on whether I tested bare wire or the ring terminal. So the voltage drop was so minuscule my multimeter could not detect it.Down side is they are a little pricey compared to other suppliers of these types of terminals, but it looks like they are one of the few players in the game that offer this size wire gauge in a #10 ring size. Supply and demand type thing....

Completed the Big-3. Ordered the 1/4 eyelet by accident. It wasn't large enough for the alternator stud and battery piggyback bolts. The 3/8 was perfect. This fit 4 AWG wire perfectly. I crimped with a hammer crimping tool and added solder after. These are nice and heavy. Can't beat this deal compared to about $4 for a pair at Pep Boys!

These lugs are quite well made. I crimped them onto welding cable used for interconnects for my solar battery system. I use a simple die crimper that uses a few hammer blows to make the connection. Be sure that you are not shy about getting the lug properly around the cable.I recommend using glue-coated heat shrink tubing over the connection for additional mechanical strength and to keep moisture and things like battery acid from getting inside the joint.Filling with solder is not necessary as it can be with other lugs.Enjoy!

Ordered these to do a little battery to trunk relocation in my "67 Mercury Comet.I simply trimmed the wire to how ever deep they'd fit in the new connectors, heated the copper connector up until I could fill it with solder (use electrical solder), stuffed the wire in there, kept heat on it until it was hot enough to see the solder wicking up into the wire, removed heat, cooled it down, stuck some heat shrink on there, shrunk it up nice and clean, then wired up my car. Worked like a champ.I've used these on my car stereo stuff when I did that a a few years ago too. Still thumping, and playing music like it's new.

This doesn't fit any of my 1/0 cable properly. Had to strip off many stands of wire off my cable to allow this terminal to fit. Not recommended!

Used 4 gauge ...they were a little lighter than i usually work with, without a lot of material around the edges of the hole. They crimped a bit too easy. I used them for trolling motor batteries that wont have a lot of high amperage. I wouldnt recommend for higher draws like starter cables or in areas subjected to to the elements...not a lot of meat to begin with, any corrosion at all around the lug and they would fail.

Worked as intended. Note: These are super heavy duty copper and need a special crimper. Regular wire crimper won't do the job. If your using these for car audio, these work but are probably not what you are expecting. They are really solid and also quite bulky. Real quality product but understand this isn't just your regular ring terminal like you'd find in the electronics section of your local hardware store.

Reviewing 1 gauge, 5/16" hole.Really nice, thick, beefy copper. The wire end has a flared/rounded tip making it easy to get all those fine strands making up my 1 gauge wire into the connector. Really happy with the amount of copper both in thickness and in the amount making contact for electrical connection. Just bought 10 more to finish my project now that I know these fit the bill, and plan to buy their 1/0 when it comes back in stock and I upgrade some of my wiring as my amp draw increases.

I liked I could order just 2 of them because their for the grounding wires on my Amplifiers which use a 4 Guage wire and the Bolt 🔩 I'm grounding them with is just a tiny bit smaller than ½" perfect for what I need 💯👍🏻