Grinders
by Royal Queen Seeds
The RQS Metal Grinder Limited Edition is a four-part metal herb grinder with diamond-shaped milling teeth, an interior kief sieve, and an embossed Royal Queen Seeds logo on the lid. It's 52mm across — the right size for personal use without being so small you're fighting it every time you grind. RQS built their name on cannabis genetics, and this grinder is their way of staying with you from seed to smoke.
A decent metal grinder does one thing that your fingers, scissors, and shot-glass-and-coin tricks can't: it produces a consistent, even grind every single time. That matters more than most people think. Uneven chunks mean uneven airflow — your joint canoes, your bowl cherries on one side, and you waste herb. A proper 4-part grinder with diamond-shaped teeth shreds everything to the same texture in a few twists.
The RQS Limited Edition handles this well. The teeth are sharp out of the box, the threading between sections is smooth, and the magnet on the lid has enough pull to keep it shut in your pocket or bag. It's got a satisfying weight to it — not heavy enough to be a burden, but solid enough that you know you're not holding a toy. The embossed RQS crown logo on top is a nice touch if you care about that sort of thing, and since it's a limited run, it won't be around forever.
The honest limitation? At 52mm, the grinding chamber is on the smaller side. If you're prepping for a group session or loading a large vaporiser bowl, you'll need to grind in batches. For solo use or rolling a joint or two, it's spot on. If you regularly grind larger amounts, you'd want to look at a 63mm or larger grinder instead.
| Spec | Value |
|---|---|
| Brand | Royal Queen Seeds |
| Type | 4-part metal herb grinder |
| Diameter | 52mm |
| Tooth Design | Diamond-shaped milling teeth |
| Kief Catcher | Yes — bottom compartment with mesh sieve |
| Lid Closure | Magnetic |
| Edition | Limited edition with embossed RQS logo |
| SKU | HS0326 |
Pair this grinder with rolling papers and tips for a complete session kit. If you're a vaporiser user, evenly ground herb from a metal grinder like this one makes a noticeable difference in vapour quality and extraction efficiency — grab a portable vaporiser to get the most from your grind.
We've sold grinders since the early 2000s, and the pattern is always the same. Someone buys a plastic or acrylic grinder because it's a couple of euros cheaper, uses it for a month, and comes back because the teeth have dulled, the threading has stripped, or the whole thing is gummed shut with resin they can't clean out. Metal grinders — even entry-level ones like this RQS — last years with basic maintenance. The aluminium body doesn't crack, the teeth stay sharp, and the threading holds up because metal-on-metal doesn't deform the way plastic does.
The kief compartment is the other thing people underestimate. That fine dust that coats your fingers when you handle good herb? That's trichome heads — the most concentrated part of the plant. A 2-part grinder lets all of that stick to the walls or fall into your ground herb unevenly. A 4-part grinder with a sieve screen catches it separately, so after a few weeks you've got a genuine stash of potent kief you didn't even have to think about collecting. It's the best passive accumulation trick in the game.
| Feature | RQS Limited Edition (52mm) | Standard Acrylic Grinder | Large Metal Grinder (63mm+) |
|---|---|---|---|
| Material | Metal (aluminium) | Acrylic / plastic | Metal (aluminium or zinc alloy) |
| Parts | 4 | 2 or 3 | 4 |
| Kief Catcher | Yes | No | Yes |
| Diameter | 52mm | 50–60mm | 63mm+ |
| Durability | Years with care | Months before teeth dull | Years with care |
| Portability | Pocketable | Pocketable | Bag-friendly, not pocket-friendly |
| Best for | Solo sessions, daily carry | Occasional use on a budget | Group sessions, heavy users |
A 4-part grinder separates your ground herb from the kief that falls through the sieve screen. You get a more consistent grind in the middle chamber and a bonus stash of concentrated trichome dust in the bottom. A 2-part grinder mixes everything together and you lose kief to the walls.
Diamond-shaped teeth have angled edges that slice and shred herb rather than crushing it. This produces a fluffier, more even grind with less effort. Flat or peg-shaped teeth tend to mash the herb, which can make it clump.
Brush the sieve screen with a stiff brush after each use to keep it clear. For a deep clean, disassemble all 4 parts, soak in isopropyl alcohol for 20–30 minutes, scrub with a brush, rinse with warm water, and let it dry completely before reassembling.
For rolling 1–2 joints or packing a vaporiser bowl, 52mm is plenty. You can fit roughly 1–2 grams of dried herb per load. If you're regularly grinding for groups or larger quantities, step up to a 63mm grinder.
Yes. All 4 sections unscrew by hand. The magnetic lid lifts straight off. The threading on the RQS grinder is smooth enough that resin build-up doesn't jam it quickly, but regular cleaning keeps it turning freely long-term.
Functionally, the core design is similar — 4 parts, diamond teeth, kief screen. The RQS version is a limited edition with the embossed Royal Queen Seeds logo, and RQS tends to use tighter manufacturing tolerances. You're also getting a branded piece from a well-known seed company, which matters if you care about that.
Depends on how often you grind and the quality of your herb. Most daily users accumulate a usable amount — enough to top a bowl — within 2–3 weeks. Keeping a coin in the herb chamber and giving it a shake after grinding speeds up the process by knocking more trichomes through the screen.
Last updated: April 2026
