Grinders
by Royal Queen Seeds
The Metal Grinder RQS Pollinator is a four-part aluminium herb grinder built to shred, sift, and collect in one go. Made by Royal Queen Seeds — a name you'll recognise from the seed world — this 56mm grinder separates your ground herb from the fine kief particles using a built-in mesh screen, so nothing goes to waste. It's the workhorse grinder you grab when you want consistent results without faffing about.
| Spec | Value |
|---|---|
| Brand | Royal Queen Seeds |
| Material | Aluminium (polished silver finish) |
| Parts | 4 (lid, grinding chamber, filter screen, kief catcher) |
| Diameter | 56mm |
| Tooth Design | Diamond-shaped milling teeth |
| Filter | Metal mesh screen |
| Finish | Polished silver with RQS logo on lid |
| SKU | HS0324 |
Complete your smoking setup with rolling papers and filter tips — a grinder this consistent deserves a properly rolled joint to match. If you're looking to step up your storage game, a UV-proof stash jar keeps your freshly ground herb from drying out between sessions.
A decent herb grinder changes the way you smoke. Tearing buds apart with your fingers leaves you with uneven chunks — some too dense, some too fine — which means uneven burning, wasted material, and joints that canoe down one side. We've watched customers come back after switching to a proper grinder and say the same thing: "I'm using less herb and getting more out of it."
The RQS Pollinator's four-part design does something a two-part grinder can't: it catches kief. That fine, trichome-rich powder falls through the metal mesh screen into the bottom chamber while your ground herb stays in the middle section. Over a few weeks, you'll build up a visible layer of concentrated material — sprinkle it on a bowl or into a joint for an extra kick. It's essentially free potency you'd otherwise lose stuck to your fingers or the bottom of a baggie.
The diamond-shaped teeth on this one are properly sharp out of the box. They interlock when you twist the lid, pulling buds apart rather than crushing them. That matters because crushing generates heat and pressure that can damage trichomes before they even reach the screen. A clean shearing action keeps more of the good stuff intact.
Pick this grinder up and the first thing you notice is the weight — it's got a solid, almost reassuring heft that cheap acrylic grinders simply don't have. The aluminium body has a smooth, polished finish with the Royal Queen Seeds logo laser-engraved into the lid. It doesn't feel like it's going to slip out of your grip, and the threading between the sections is tight without being stiff. After a few uses, the threads wear in nicely and the twist becomes almost effortless.
The one thing to watch: aluminium grinders need occasional cleaning. Resinous herb builds up between the teeth and around the screen over time, which makes grinding harder and reduces how much kief falls through. A quick soak in isopropyl alcohol every couple of weeks keeps everything running smoothly. We've seen customers bring in grinders that are practically glued shut because they never cleaned them — don't be that person.
If you're weighing up whether to spend a bit more on this aluminium grinder versus grabbing a cheap acrylic one, here's the honest breakdown. Acrylic grinders work fine for the first month or so, but the teeth dull quickly, the plastic threads strip, and they don't come with a kief screen. You'll replace an acrylic grinder 3-4 times in the lifespan of a single metal one. The RQS Pollinator isn't the most expensive grinder on the market — it's a mid-range workhorse that punches above its weight. If you're after something with even more precision, look at stainless steel grinders with interchangeable screens, but for most people this aluminium model is the sweet spot between performance and price.
The kief catcher is the bottom compartment that collects fine trichome particles falling through the metal mesh screen. These particles — called kief — are the most concentrated part of the herb. Sprinkle collected kief on top of a bowl or into a joint for added potency.
Every 2-3 weeks with regular use. Soak all four parts in isopropyl alcohol for 20-30 minutes, scrub with a toothbrush, rinse, and dry completely. Neglecting cleaning makes the grinder harder to twist and blocks the kief screen.
No. Aluminium is non-reactive at room temperature and doesn't transfer flavour to your ground herb. The polished finish also resists buildup better than raw or anodised surfaces, keeping things clean between sessions.
Absolutely. The diamond-shaped teeth handle any dry herb — from damiana and mugwort to lavender and peppermint. Just make sure the herb is properly dried first; fresh or moist material clogs the teeth and screen.
A 2-part grinder grinds but doesn't separate. The 4-part design adds a mesh filter and kief catcher, so you collect trichome-rich powder automatically while grinding. Over time, that collected kief adds up to a meaningful bonus you'd otherwise lose.
The grind consistency is medium — well suited for joints and vaporisers. Fewer twists give you a coarser result for bong bowls; more twists produce a finer grind. It won't reach powder-fine consistency, which is actually better for airflow.
For personal use, 56mm is the standard sweet spot. It holds enough for 1-2 joints per load without being bulky in a pocket or bag. If you're grinding for groups regularly, consider stepping up to a 63mm model.
Last updated: April 2026
