GA 4-Piece Aluminum Herb Grinder – 3-Inch Full-Size | BlueBus Fine Tools

The GA 3-Inch Aluminum Herb Grinder by BlueBus Fine Tools is the full-size powerhouse in the GA lineup. Designed for enthusiasts who grind frequently and in larger quantities, this premium 4-piece herb grinder delivers the same precision engineering as its smaller siblings — in a roomier, more ergonomic form factor.

Full-Size Performance, Professional-Grade Build
With a 3-inch diameter, this aluminum herb grinder offers a significantly larger grinding surface than compact models, meaning fewer twists and faster results. The diamond-sharp teeth are precision-cut to produce a fluffy, even consistency every time — no tearing, no uneven chunks. The 4-piece design includes a spacious grinding chamber, deep collection tray, stainless steel mesh screen, and fine-particle catcher.
Engineered for Daily Use

• Heavy-Duty Aluminum Alloy Body: Lightweight, corrosion-resistant, and built to withstand years of heavy use.

• Stainless Steel Mesh Screen: Precisely captures fine particles for clean separation and maximum material usage.

• Neodymium Magnetic Lid: Industrial-strength rare-earth magnet ensures a secure seal — no accidental spills.

• Diamond-Sharp Teeth: Extra-wide cutting surface handles large loads of dry herbs with minimal effort.

• Deep Collection Tray with Rounded Edges: Extra depth means more room for ground material, and rounded edges eliminate sticky buildup.

• Scraper Tool Included: Retrieve every last bit from the tray and screen.
Available in Black, Blue, and Silver, the GA 3-Inch is the best herbal grinder for home setups and anyone who values a large-capacity, effortless grind. At $32.90, it offers premium full-size performance at a competitive price point.

Frequently Asked Questions

Is the 3-inch grinder too big to carry?
While larger than the 2″ and 2.5″ models, the 3-inch GA herb grinder still fits comfortably in a bag or carrying case. Most users find the larger grip more comfortable and the extra capacity well worth the slight size increase.

How do I clean a 4-piece herb grinder?
Take apart all four sections and brush the teeth and mesh screen with a cleaning brush or toothpick. For a thorough clean, soak the aluminum components in isopropyl alcohol for 15–20 minutes, then rinse with warm water and dry completely before reassembling.

What is the fine-particle catcher and how does it work?
The bottom chamber of a 4-piece grinder is the fine-particle catcher. As you grind, the stainless steel mesh screen allows the finest particles to fall through and collect in this chamber over time, giving you a concentrated, premium-quality material that many enthusiasts value.

Mesh Bag not included.