How do I find my ring size for the Twin Groove 7mm Tungsten Ring?

We recommend using a ring sizer tool for the most accurate fit. You can also use a piece of string or strip of paper to measure your finger circumference, then divide by pi (3.14) to get your diameter in millimetres. Our ring size guide on the website shows how this converts to Australian and international sizes. If you're unsure, our team is happy to help — just contact us before ordering.

How durable is this tungsten ring?

Tungsten is one of the hardest metals used in jewellery. Our tungsten rings are virtually scratch-proof and designed to hold their polish for life. They are ideal for men who work with their hands — tradespeople, outdoor workers, gym-goers. The only downside to tungsten is that it cannot be resized, so getting your size right before ordering is important.

What is your exchange policy if my ring does not fit?

We offer easy ring exchanges if the size is not right. Simply contact our team within 30 days of receiving your order and we will arrange a swap to the correct size. For custom-made or engraved rings, exchanges may be limited, so we strongly recommend confirming your size before ordering. Our ring sizer tool is available for free with any ring purchase.

How quickly will my ring be dispatched?

In-stock rings are typically dispatched within 1–2 business days. Custom and made-to-order rings may take additional time depending on specifications — we will provide an estimated timeframe at checkout. We ship Australia-wide with tracking, so you can follow your order from our door to yours.

Twin Groove 7mm Tungsten Ring

Mr Oracle

$239.00

or 4 interest-free payments of $59.75 with Afterpay

Twin Groove 7mm Tungsten Ring. Ready-to-ship Australian inventory. Order today and we’ll get it moving. Packed in Brisbane · Fit-for-Life warranty.

Not sure of your size? Use our ring sizer

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In-stock orders are usually dispatched within 1–2 business days (Monday to Friday) from Brisbane. Australian transit after dispatch: 5–10 business days standard, 1–2 express. · Fit-for-Life sizing support on eligible tungsten and titanium rings · Shipping options and charges.

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Fast shipping. Orders over $100 ship free. Get your ring.

Built for electricians and mechanics.
Free shipping on orders over $100.
4.9★ Verified reviews.

Built for the job. In-stock rings ship daily.

Shop more in this material: Tungsten Rings

Shop more in this style: Mens Wedding Rings

SKU: FTR-020 Categories: In Stock, Mens Rings, Mens Wedding Rings, Tungsten Rings

SKU: FTR-020

Free AU Shipping$100+

60-DayReturns

LifetimeStructural Warranty

Fast DispatchMon–Fri from Brisbane

Secure checkout • Afterpay available • Free size help before you order

Built for a lifetime.

Tungsten carbide is the hardest ring material we stock. Here's why it doesn't scratch, bend, or tarnish.

9^MOHS

Scratch-proof hardness

Sits just below sapphire on the Mohs scale. 4× harder than titanium, 10× harder than 18k gold — the ring looks identical on day 10,000 as day one.

Heavier than gold

Pressed from tungsten carbide powder at 2,000°C, precision-CNC'd. Real weighted feel — nothing hollow, no plating to wear through.

∞

Lifetime warranty

If the metal ever cracks, chips, or fades — we replace it. One-time size swap free in the first 60 days.

In the box

Jewellery boxBranded presentation box — gift-ready out of the parcel.
Free ring sizerPlastic finger-sizer included, so you nail the fit first time.
Lifetime warrantyCracks, chips, fades — we replace it. For as long as you wear it.
Free exchange*Free swap on rings over $99 ($10 fee under $99). Tracked Australia Post on dispatch.

Dispatch

Dispatched from Brisbane — tracked Australia Post.

The details.

If you want a ring that looks the same in ten years as it does today, tungsten carbide is hard to beat. The scratch resistance is exceptional — general daily wear, keys in the pocket, knocks on the workbench. This one comes in a 7mm width — It has a satisfying solid weight without being uncomfortably heavy. The polished surface keeps its shine without replating. Note that tungsten can't be resized, so get your measurement right. Good for blokes who want something tough and permanent.

Browse Related Rings: Mens Wedding Rings, Tungsten Rings.

The specs.

Width: 7mm
Material: Tungsten Carbide
Finish: Polished
Edge: Domed
Available sizes: 7 / N.5 – 14 / Z+3

Not sure of your size?

Tungsten can't be resized — but in a true emergency it can be safely cut off. Best to nail the fit the first time.

Option 1 Free sizer post-out Order a free plastic sizer kit — we post it anywhere in AU. Option 2 Printable chart AU / US / mm chart — 30-second ring match at home. Option 3 Ask our team Not sure between two sizes? Message us — we'll help you pick.

What 11 owners actually say.

Average 5.0 / 5 across 11 verified reviews.

Customer reviews

5.0 Based on 11 reviews

Exceptional

Rick M. Verified buyer July 9, 2023

I originally purchased this ring for my partner a few years ago. He accidentally knocked it off the bathroom vanity & it shattered. MRO helped me find the original order, style & size & it was shipped out in under a week. Thanks so much for all the help. The customer service is beyond amazing. Thank goodness for the Lifetime Warranty. My partner is so very happy

Amazing

Jennifer C. Verified buyer October 4, 2021

I got this ring for my fiancé as a anniversary present and he absolutely loves it. It fits him perfectly and hasn’t taken it off since.