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One for you, two for friends
Add three GA 3.5" grinders to your cart. The third is on us, through Nov 15.
The GA 3.5-Inch Aluminum Herb Grinder by BlueBus Fine Tools is the extra-large flagship of the GA lineup — the biggest grinder in the collection, built for those who demand maximum capacity and effortless performance. This premium 4-piece herb grinder combines heavy-duty aluminum alloy construction with precision engineering for a truly professional-grade experience.
Extra-Large Capacity, Maximum Color Selection
At 3.5 inches in diameter, this is the largest herb grinder in the BlueBus catalog. The oversized grinding chamber means you can prepare more dry herbs and botanicals per session with fewer twists, saving time and effort. It is also the only GA model available in five striking colors — Black, Blue, Purple, Gold, and Green — making it a standout piece for any collection.
The Same Precision You Trust, Scaled Up
• Heavy-Duty Aluminum Alloy Body: Built from the same premium alloy as every GA grinder, delivering scratch-resistant, corrosion-proof durability at a larger scale.
• Stainless Steel Mesh Screen: Precisely filters fine particles for clean separation and maximum material usage.
• Neodymium Magnetic Lid: Industrial-strength rare-earth magnet keeps the lid firmly sealed — no spills, even with a full chamber.
• Diamond-Sharp Teeth: Extra-wide cutting surface with precision-cut teeth handles the largest loads of dry herbs effortlessly.
• Deep Collection Tray with Rounded Edges: The deepest tray in the GA series means more room for ground material with zero sticky buildup.
• Scraper Tool Included: Retrieve every last bit from the tray and screen.
Frequently Asked Questions
What makes the 3.5-inch different from the 3-inch?
The 3.5-inch model offers a noticeably larger grinding chamber and deeper collection trays than the 3-inch, plus it comes in 5 color options versus 3. It is ideal for users who frequently prepare larger quantities and want the roomiest grinder possible.
How do I clean my extra-large herb grinder?
Disassemble all four pieces and brush the teeth and mesh screen with a cleaning brush. For a deep clean, soak the aluminum components in isopropyl alcohol for 15–20 minutes, rinse with warm water, and air dry completely before reassembling.
Is this grinder suitable as a gift?
Absolutely. The GA 3.5-Inch comes in five premium color options including Gold and Green, making it an eye-catching, high-quality gift for anyone who appreciates fine tools.
Mesh Bag not included.
All orders ship out within 1-3 Days!
Designed to make every session smooth, clean, and hassle-free. Say goodbye to stuck chambers and uneven grinding.
The durable mesh screen filters and collects the finest particles, allowing for easy sifting and separation for a fine, smooth texture.
Precision-engineered to effortlessly cut through even the toughest spices, ensuring smooth and even grinding every time.
Keeps everything secure—even during vigorous grinding—so you never have to worry about spills.
Overall rating: 4.8 / 5 from 313 reviews.
Very happy with my 3.5in grinder. The quality is immediately apparent upon opening the box. The grinding area is a maze of razor sharp barbs that takes minimal effort to do what you need to do to get the job done. Good size area to grind many buds into. Add the little cleanout brush and scraper for keif and youve got a pro caliber piece. Pure class
GA 4-Piece Aluminum Herb Grinder – 3.5-Inch Extra-Large | BlueBus Fine Tools
Great grinder
GA 4-Piece Aluminum Herb Grinder – 3-Inch Full-Size | BlueBus Fine Tools
The mesh bit broke in the middle
GA 4-Piece Aluminum Herb Grinder – 3.5-Inch Extra-Large | BlueBus Fine Tools
Best grinder ever. Love how there are no pinched corners.
Most solid grinder i’ve ever had the pleasure of owning, extremely good customer service
Greatest grinder ive ever owned. No need for a "quick release tray" when its a 1/4 turn locking thread ❤️
This is the best grinder I have ever possessed. I would recommend this grinder to anyone. I will definitely purchase another grinder soon.
I suffered a spinal cord injury in 2024, which resulted in extremely altered reflexes and spasmodic muscles. In short, I was dropping things a lot. I absolutely love this grinder! My friend brought over her OG Blue Bus grinder last time she came to visit and I fell in love. Her grinder was cool, but this new version is PERFECT for me. The ridges on the side make it very user-friendly for someone like me. It's very grippy. Also, I threw a whole nug in there and the grinder didn't even STUTTER. I also really love the Kief catcher. It's rounded so I don't have to use a toothpick to get the kief out of the corners! 10/10 recommend, especially for anyone with a disability that makes it difficult for them to grip things.
This is the best grinder I've ever used it grinds so smooth and cuts through a large amount of bud like butter. And it looks cool too.
Merry Christmas
So much easier on my hands, love it!!
I love the colors. Sativa, hybrid, indica, I’ll bet you can guess which is for which. Superior quality craftsmanship. Reasonably priced. Fast.
I love the colors. Sativa, hybrid, indica, I�ll bet you can guess which is for which. Superior quality craftsmanship. Reasonably priced. Fast.
I have NEVER had a better grinder from ANYWHERE. The paint is absolutely gorgeous and vibrant. Every piece of the grinder comes apart and goes back together smooth with ease. The square shaped teeth, make it impossible to have difficulty trying to grind your herbs. When it comes to most grinders, if you put too much herb in the top, it becomes very difficult to grind the herb, not this grinder though, I have tested it and tried to make it difficult to turn the top, and there is not a limit, if you can fit the herbs up there, it’ll work. This is by far the best grinder I have ever come across, and the only grinder I will be purchasing for the rest of my life. O my god also, when I first got my grinder the paint was made to thick and it was difficult to get to my keif tray, blue bus contacted me about the issue and gave me a FREE and NEW grinder to replace the one. Forever thankful.❤️ Much love to blue bus and what they do😌
I have NEVER had a better grinder from ANYWHERE. The paint is absolutely gorgeous and vibrant. Every piece of the grinder comes apart and goes back together smooth with ease. The square shaped teeth, make it impossible to have difficulty trying to grind your herbs. When it comes to most grinders, if you put too much herb in the top, it becomes very difficult to grind the herb, not this grinder though, I have tested it and tried to make it difficult to turn the top, and there is not a limit, if you can fit the herbs up there, it�ll work. This is by far the best grinder I have ever come across, and the only grinder I will be purchasing for the rest of my life. O my god also, when I first got my grinder the paint was made to thick and it was difficult to get to my keif tray, blue bus contacted me about the issue and gave me a FREE and NEW grinder to replace the one. Forever thankful.?? Much love to blue bus and what they do??
I absolutely love this company; the grinder on the left is the old version of the Blue Bus grinder I’ve had for over 6 years and it’s by far the best quality grinder I’ve ever owned. The only reason I ordered another one was because I’ve been looking everywhere for a back up just in case. Great quality, great customer service, and my favorite product!!
I absolutely love this company; the grinder on the left is the old version of the Blue Bus grinder I�ve had for over 6 years and it�s by far the best quality grinder I�ve ever owned. The only reason I ordered another one was because I�ve been looking everywhere for a back up just in case. Great quality, great customer service, and my favorite product!!
Love this grinder,it’s got really sharp teeth grinds up my Herb 🌿 perfectly with such ease I also love the grip and feel of the grinder,most grinders Iv ever had didnt have any kinda good grip and would easily slip out my hands and wast herb every where but not with the Bluebus. I also love how it comes with its own brush for cleaning and it’s own lil keef scraper. Another nice feature is how the keef catcher locks into place soo it won’t ever fall off or anything like that. It’s a really nice grinder I really do recommend it to anyone. I can’t wait to see how much keef and herb she saves me on the long run.😁😁😁💯 thank you blue bus fine tools.🙏 much appreciated.
Love this grinder,it�s got really sharp teeth grinds up my Herb ?? perfectly with such ease I also love the grip and feel of the grinder,most grinders Iv ever had didnt have any kinda good grip and would easily slip out my hands and wast herb every where but not with the Bluebus. I also love how it comes with its own brush for cleaning and it�s own lil keef scraper. Another nice feature is how the keef catcher locks into place soo it won�t ever fall off or anything like that. It�s a really nice grinder I really do recommend it to anyone. I can�t wait to see how much keef and herb she saves me on the long run.???????? thank you blue bus fine tools.?? much appreciated.
Its much easier for my arthritis, can even do it one handed nearly!! Very smooth turn and the grind is perfect.
I'm really enjoying this one so far.
Awesome grinder! Fits almost a quarter at a time.
I’ve used tons of grinders, this is the best by far.
I’ve used tons of grinders, this is the best by far.
Thumbs up for me :)
if you enjoy smoking a little sweeter you must add these grinders to your collection
I just received the unit, it came in a high quality box, shipped in a bag. Delivered damage free. The grinder itself looks amazing, has some weight to it (I like that ). Seems to operate properly, I would definitely buy another one if needed, but this one looks like it might last forever.
Best grinder I've ever owned. Looks sick too 10/10
I received this grinder today, in the black finish. It arrived earlier than I expected, and the packaging was sturdy and appealing. The grinder has a nice weight to it and is comfortable to hold. It was easy to grind and the herb was ground nicely, not pulverized. I like the size of the grinder as well, and none of the edges are sharp. Overall it feels like quality. I would definitely recommend this for any herb enthusiast!
This grinder is amazing. It opens so smoothly and grinds product very quickly. 10/10
no stick so far
GC 4-Piece Ceramic Herb Grinder – 2.5-Inch Black | BlueBus Fine Tools
Great grinder for sure. Grinds just a little courser than the 2 inch Blue Bus grinder I have. Incredible grip design, comfortable yet powerful. High quality. Great value.
GA 4-Piece Aluminum Herb Grinder – 2-Inch Compact | BlueBus Fine Tools
Fits well in my hand for a strong grip when grinding. ceramic keeps it clean and the grind is 👌
GAC 4-Piece Ceramic Herb Grinder – 2.5-Inch White | BlueBus Fine Tools
Works great
GA 4-Piece Aluminum Herb Grinder – 3.5-Inch Extra-Large | BlueBus Fine Tools
Great grinder and good price. Love the fluff it makes,smokes good. Several cool colors.
GA 4-Piece Aluminum Herb Grinder – 3.5-Inch Extra-Large | BlueBus Fine Tools
Quality mechanism, works great!!
GA 4-Piece Aluminum Herb Grinder – 3.5-Inch Extra-Large | BlueBus Fine Tools
Worked like a charm. Wish it had a crank like my previous grinder but it did work great. Thanks.
GAC 4-Piece Ceramic Herb Grinder – 2.5-Inch White | BlueBus Fine Tools
What I like: Multiple levels, ceramic coating (although only time will tell if that helps keep the cutting edges clean longer) What I don't like: The level that holds the ground herb just sits loose inside the base, so if the user isn't careful it can be knocked crooked or completely off when the top is removed, spilling the ground herb.
GAC 4-Piece Ceramic Herb Grinder – 2.5-Inch Light Green | BlueBus Fine Tools
The grinder is excellent. I like the color & it works beautifully. I like the quality of BLUEBUS grinders. They seem pretty durable.
GC 4-Piece Ceramic Herb Grinder – 2.5-Inch Yellow | BlueBus Fine Tools
Absolutely fantastic product!!
M1 4-Piece Aluminum Herb Grinder – 2.5-Inch Ergonomic | BlueBus Fine Tools
