MJR Tumblers 1 Pound 36 Silicon Carbide Rock Grit Extra Coarse

its grit all 60/90 grit is the same

The size bag is perfect .it preforms great. It usually arrives before its eta. Its a good value for the size package.i use a large rock polisher and it does many loads of rocks

Liked the quantity.

love ,love,love to see a plane rock turn into a shiny gem

Great product I would definitely buy again

Love this 1200 grit !! And the company is awesome to deal with!!

. Breaks down too soon. no trace after 36 hrs of tumbling.

It is pricey. Worked ok but not that much better than the 90 grit which is much less expensive

So frustrating!!! I was so excited to open the tumbler after the final polish, only to find dull rocks. I used this brand a few years ago and was disappointed. I ordered it again by mistake but figured I would give it another try. TERRIBLE! Such a waste of money!!! I am having to repeat the polish stage with a different brand and wait another week.

This product was phenomenal. It helped me take a whole week off of the time needed for my tumbles! Highly recommended if time is a concern!