The Kozo Window 2.5" is a smart 4-piece aluminum herb grinder with a clear top, letting you watch your herb as it grinds. This 2.5-inch size is very versatile, making it great for grinding at home or taking it on the go.
This grinder is made from a durable aluminum alloy and designed to last. Its 2.5-inch width gives you plenty of room for your herb but is still small enough for travel. A strong magnetic lid makes sure everything stays locked inside.
Buyer's Checklist: Kozo Window 2.5"
This grinder is ideal for anyone who wants more control and efficiency. The window helps you get the perfect grind every time, and the kief chamber makes sure no potent material is wasted.
This grinder gives you visual control and collects kief efficiently in a tough, travel-ready package.
Looking at the specs helps explain how this grinder is built for a better experience. Each feature provides a clear advantage, from controlling the grind texture to getting the most from your herb.
| Specification | Value (What it is) | Benefit (Why it helps you) |
|---|---|---|
| Diameter | 2.5 inches (approx. 63mm) | Offers a large grinding chamber that's still easy to hold and carry. |
| Construction | 4-Piece, 3-Chamber Design | Grinds herb, stores it in a second chamber, and collects fine pollen (kief) below. |
| Material | Heavy-Duty Aluminum Alloy | Provides long-term durability, resists wear, and feels sturdy in your hand. |
| Top Lid | Magnetic Lid with Viewing Window | Keeps the grinder shut tight while letting you check the grind progress instantly. |
| Screen | Stainless Steel Mesh Screen | Effectively sifts and separates the most potent pollen into the kief catcher. |
| Included Accessory | Pollen Scraper | Helps you collect every bit of valuable kief from the bottom chamber. |
Every part, from the aluminum body to the mesh screen, is selected for performance and a long life.
The Kozo Window 2.5" is more than just a typical grinder. Its special features are designed to fix common issues, like guessing your grind texture or losing valuable kief.
The clear window is this grinder's key feature, giving you full control over your grind. It lets you see exactly how coarse or fine your herb is, so you don't have to stop and open it. You can get the perfect texture for any use without guessing.
A 4-piece grinder is a full system. The top two pieces have teeth for grinding. Once ground, the herb falls through holes into the second chamber. Below that is a fine mesh screen that lets tiny, potent pollen (kief) fall into the bottom chamber. This separates your ground herb from the kief, which you can save for later.
The Kozo grinder uses a powerful neodymium magnet to hold the lid on securely. This is a big plus compared to grinders that can pop open if dropped or jostled. The strong seal prevents spills and helps contain odors, making it better for travel.
With its window, 4-piece build, and magnetic lid, this grinder offers great control and efficiency.
You have a few choices for under $30. The Kozo Window grinder has unique features, and seeing it next to others helps show its true value.
| Feature | Kozo Window 2.5" Grinder | Standard 2.5" Aluminum Grinder | Compact 2.0" 3-Piece Grinder | Large 3.0" Zinc Alloy Grinder |
|---|---|---|---|---|
| Viewing Window | Yes | No | No | No |
| Kief Catcher | Yes (4-Piece) | Yes (4-Piece) | No (3-Piece) | Yes (4-Piece) |
| Portability | Excellent | Good | Best | Fair (Bulky) |
| Best For | Visual control & efficiency | Budget-friendly basics | Maximum portability | Large batches |
The Kozo grinder provides a special combination of visual control and full kief collection in its price range.
Good maintenance keeps your grinder turning smoothly and the window clear. Regular cleaning stops residue from building up, which can make the threads sticky and hard to turn.
To clean the window, use a soft microfiber cloth and a bit of isopropyl alcohol or a grinder cleaner. Gently wipe away any buildup. Don't use sharp tools, metal scrapers, or stiff brushes on the window, as they can cause scratches or make it cloudy.
Sticky threads are a common problem. To clean them, use a small, stiff brush (like a toothbrush) dipped in isopropyl alcohol. Scrub the threaded areas on each piece. This will dissolve the sticky resin. Then, rinse the parts with warm water and dry them completely before putting the grinder back together.
Gentle, regular cleaning with isopropyl alcohol will keep your grinder working like new.
Following a few simple steps before you start and after you finish will help your grinder work well and last for years.
Before using your new grinder for the first time, give it a quick "dry run."
A quick cleanup after each session can prevent a major mess later on.
A quick pre-use clean and post-use brush-down is the secret to a long-lasting, smooth-turning grinder.
The Kozo Window 2.5" offers some great benefits, but it's one of many preparation tools available. If you're looking at different sizes, materials, or features, check out our full grinder collection to find the perfect one for you.
!