MJR Tumblers 1 Pound 36 Silicon Carbide Rock Grit Extra Coarse

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

its grit all 60/90 grit is the same

it does the job pretty good, I use it in a tumbler to sand large pieces instead to have to sand by hand.

its grit all 60/90 grit is the same

its grit all 60/90 grit is the same

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

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.

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

it does the job pretty good, I use it in a tumbler to sand large pieces instead to have to sand by hand.

Not that good.