Black carbon fiber ring on a white background

Black carbon fiber ring with engraved initials on a beige fabric background

Hand wearing a black ring with a blurred background

Black ring with carbon fiber inlay and engraved text on a textured surface

Hand with a ring and bracelet on a wooden surface

Black gift box with a ribbon and 'Berradas' branding on a light gray background

Personalized Men’s Carbon Fiber Promise Ring for Him

Regular price
$124.00

Ring size :

Size Guide

Men Ring Size Guide

Ring size guide

International ring size conversion

Use this table to compare US and Canada ring sizes with inner diameter, EU, UK, Australia, and Japan sizing. UK and Australia use the same letter system, so they are combined into one clean column.

US / Canada	Inner diameter	EU	UK / Australia	Japan
6	16.5 mm / 0.65 in	52	L	12
7	17.3 mm / 0.68 in	54	N	14
8	18.1 mm / 0.71 in	57	P	16
9	19.0 mm / 0.75 in	59	R	19
10	19.8 mm / 0.78 in	62	T	21
11	20.6 mm / 0.81 in	64	V	23
12	21.4 mm / 0.84 in	67	X	25
13	22.2 mm / 0.87 in	69	Z	27

Inner diameter is measured across the inside of the ring. Ring size conversions are approximate. If you are between sizes, choose the larger size, especially for wider bands.

Not sure about the size?

Use our ring sizer tool before ordering to confirm the right U.S. ring size and avoid guessing.

View ring sizer

How to measure

Measure the inside diameter of a ring that already fits well, or measure the finger at the end of the day when it is at its largest. The ring should slide over the knuckle with slight resistance and sit comfortably at the base of the finger.

Quick fit notes

US 6–7: smaller fit range.
US 8–10: common range for many men’s rings.
US 11–13: better for larger fingers or a roomier fit.

Between sizes

If unsure, choose the larger size for a more comfortable fit.

Best time to measure

Measure at the end of the day when fingers are naturally a little larger.

Important note

Sizing can vary slightly depending on the ring width and fit style.

Order today to receive it by: Sep 18 – Sep 21
Shipping options at checkout.

PRODUCT DETAILS

Custom black tungsten ring for men with a carbon fiber center and polished edges. Durable, modern, and made for everyday wear.

Add a personal inside engraving with names, dates, initials, or a short message. Perfect as a men’s wedding band, promise ring for him, anniversary ring, or personalized gift for him.

Material : Tungsten Carbide
Carbon Fiber inlay
Band width : 8mm
Processing time: 1–3 business days

SHIPPING & RETURNS

We ship worldwide. Estimated delivery times shown are for standard shipping. Faster shipping options are available at checkout.
Please note that the estimated delivery mentioned above includes production time

We offer FREE returns on non-personalized items
New, unworn non-personalized pieces can be returned for a full refund within 30 days of delivery, or exchanged / returned for store credit within 60 days.

CARE

Use the complimentary Berradas polishing cloth to gently clean the metal components regularly.

After wearing, place your piece on the soft suede cloth to help preserve and protect its finish.