Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: what is the size/diameter of this grinder?
Document: This herb grinder is a perfect size. Very well make. Love the wood. Use it all the time for fresh herbs
I think this grinder is pretty good. It has a solid design and serves it's purpose. I don't get very much in it because it is so small, but for a single person who doesn't use too many herbs it is a good size.
This is a good starter grinder. It tears the herb more than it cuts but still gets the job done. The finish is nice and looks good but I wish it stayed closed better. The size is perfect cauae its not big and its not too small. Fits in pocket nicely.To sum it all up, it is well worth the purchase and I recommend it.
Just used this to grind up some dank ass...oregeno. The herb ends up a great size in the end. They don't match the pieces when they send them out, and mine didn't fit exactly right. After using it a few times and putting some oil on it, it twists just fine and stays closed so it ended up being a good thing. No herb residue, but it's a $5 grinder! Really I couldn't ask for more at this price.
So basically there are two sides to this grinder.The Good:SmallPortableSimpleSOLIDSmoothGood lookspieces of plastic grinder dont get in your herbs, cuz its not a plastic grinderThe Bad:Herbs get stuck in the nails, you really gotta whack the two pieces together to get the stuff out (or use a toothpick).Smaller than i expected but its small size could be good or bad depending on the person. i like how its smaller.Doesnt hold together well.
The product is exactly as pictured, though a little bigger than I expected. About an inch tall and two inches in diameter.
Was not the size It looks like and on the 1st time I used it 2 metal blade fell off.
perfect size and looks just like the picture, i just wish the pieces would fit together a little better so it would stay closed in my pocket.
I would buy this again if I needed to, but this product seems to be one that will last a long time. It's small, so it could easily be misplaced. I don't mind that it's so small (maybe 3 inch diameter? Info probably on the product specs), because my little herbal garden is for home use only. Love this!
Best use is as a bang-up / back-up grinder.
Answer: The grinder measures 2 inches across and the inside where the herb goes measures at about an inch and a quarter. Works well.