Hustle Trees Men's Metal Debit Card Grinder

works as intended however the metal outside lip will easily scratch your rolling tray so thats not good plus its kinda pricey when you can buy a full grinder for $10

This card is *very* thick and seems built well, I do like the grinding area, and it's very sharp, but I think it's slightly too thick honestly.My only other complaint is it's very sharp on the edges and scratches the tray.If you purchase, I recommend smoothing out the edges with some concrete or sandpaper.

Wonderful idea! Great for on-the-go grinding. Wish there were more available so I could buy them as gifts.

Does the trick... too well sometimes.The person who said it doesn't work apparently didn't understand the cheese grater concept.

Great for outdoors. Super light

Perfect for on the go

These cards are the bee’s knees.

Small

This has a sturdy feel doesn’t bend. It is the size of credit card. Grinds easier then the ones that turn.

It does what it's supposed to do, and allows you to micro grind a small amount of herb without excess leftover grated stuff

Grind really fine. This card is grinding finer than a normal grinder and effortless too. I wish I bought it before. Corners are a little rough but it will do the job just right.

Fiancé loves it! Works great when we are out somewhere and don’t want to bring a buster.

Good quality and grinds herb, what more do you need.