How does the sizing work for the diameter of the cable and the diameter of the ring. eg I have a cable of 6mm diameter and the ring 8mm diameter

A 6mm crimp will take a 6mm cable and a *mm ring will take a 10mm bolt

Can this be used to connect a subwoofer to the battery of the car along with the cable?

I have to tell you at the outset that I am no expert on vehicle electrics. I have experience of 12v systems out of necessity (rural at that time so no nearby expertese when needed!) so my first advice is, if you can, ask an expert! If that is physically impossible (I'm being serious) then yes, I would have a go at this assuming all wires are multi-filament only and you have an hydraulic crimping tool sized for these terminal lugs. I would ensure the sub-woofer lead is fused in-line as close to the terminal lug as reasonably practical. Also I would intertwine the two wires to reduce the liability for the smaller sub-woofer wire filaments to pull out accidentally. Next, check your sub-woofer can cope with 14.8 volts as the positive battery lead will be 'bringing in' charge from the alternator with up to this initially high voltage. Lastly, make sure you remember to protect this joint with the correct size of heat-shrink wrap (put that on right away from the vehicle!!). Hope this helps and I'll also refer you to the great Tony Brooks. Though he writes for the Canal Boat magazine now, he is legendary in the 12v field across all vehicular types and only recently retired from his teaching and training careers. Google 'tb training' for all his training notes! Good luck and 'fail it safe'!

How many terminals to a packet?

hi i had 10 in my pack. regards frank.

what number relates to the size of the hole in the end

The first no ie, 25 is the gage of wire or thickness and the second no is the length of the hole, so 12 mm

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10 Copper Tube 16Mm X 8Mm Lug Battery Starter Cable Welding Crimp Terminal Ring

Product ID: 48042300

Details

Colour
Silver
Connector type
Ring
Contact material
Copper
Insulation material
Non-Insulated
Terminal
Ring Terminal

⚡99.9% pure copper conductivity

🔌16mm² cable size fit

🔍inspection hole for perfect cable insertion

8929CFA

Duties & taxes included

In stock

Sold byAmazon Cote D' IvoireDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Connect with Confidence — Power Up Like a Pro!

PREMIUM 99 9 PURE COPPER CORE - Experience superior electrical conductivity and durability with tin-plated copper lugs.
PRECISION FIT FOR 16 MM CABLES - Seamlessly connect your battery or welding cables with a perfect 5.3mm diameter inlet.
INSPECTION HOLE FOR QUALITY ASSURANCE - Quickly verify cable insertion to avoid faulty connections and downtime.
VERSATILE USE ACROSS VEHICLES EQUIPMENT - Ideal for cars, trucks, boats, tractors, and welding earth leads—one solution for all your power needs.
TRADE GRADE RELIABILITY WITH FAST UK DELIVERY - Trusted by professionals, backed by 4.7-star reviews, and shipped swiftly from the UK.

This pack of 10 copper tube ring terminals features 16mm² cable compatibility with a flared bell-mouth entry and inspection hole for easy, secure cable insertion. Made from 99.9% pure tin-plated copper, these non-insulated lugs deliver high conductivity and durability, perfect for automotive, marine, and welding applications. UK-based seller with fast shipping and top-rated quality.

Specifications

ASIN	B00904IIKG
Best Sellers Rank	61,979 in DIY & Tools ( See Top 100 in DIY & Tools ) 355 in Electrical Terminals & Kits
Brand	All Trade Direct
Colour	Silver
Connector Gender	Male
Connector Type	Ring
Connector type	Ring
Contact Material	Copper
Contact material	Copper
Country Of Origin	China
Customer Reviews	4.7 out of 5 stars 608 Reviews
Insulation Material Type	Non-Insulated
Insulation material	Non-Insulated
Item Weight	48 Grams
Manufacturer	All Trade Direct
Manufacturer Part Number	R16-8-10PACK-AM
Material	Copper
Maximum Voltage	12 Volts (DC)
Number of Items	10
Temperature Rating	0-50 C
Terminal	Ring Terminal
Unit Count	10.0 count
Wire Diameter	16 Millimetres

Reviews

S**7

Good quality

As described, good fit. Used on a mains distribution board, and on a car audio installation

14.04.2026

A**R

As described and fit for purpose

As described and will do the job nicely

24.04.2026

M**Y

Good quality but postage slow

These are good quality and crimped well to hold the wire tight. Postage was unfortunately too slow and they arrived later then the specified date so I did have to go out and buy others as was mid project. I would recommend but advise to order in plenty of time.

27.08.2025

M**S

Works as intended

Absolute fantastic. They work perfectly fine and much better than some of the rubbish sold on amazon in the range.

18.01.2026

R**B

It fits the cable

Not used yet but looks like it will be ok and reasonably priced

4.05.2026

A**T

Best price around

Good quality at a good price

29.08.2026

D**D

Good quality

Very good quality, used to make up battery cables on our boat

30.12.2025

M**H

only buy flared out lugs

Always buy the flared out version of the copper lugs.When cutting 35mm cable you tend to increase the diameter of the copper end, this then proves difficult when trying to enter into a straight lugs, whereas it is easy to enter into a flared out version

21.12.2025

M**.

Trop cher

Attention au prix ! Je n'ai pas fait attention et je me suis fait avoir 15€ De frais d'envoi Ça fait cher la cosse !

5.05.2017

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