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Specifically formulated and easy to use designed for the Smithsonian Rock Tumbler.
You get one full set , four bags of rock tumbling grit and and polish. Each kit contains Grade A tumbling grit and polish as used by gemstone industry professionals, to tumble rocks in your Smithsonian rock tumbler and bring them to a gem like finish. The grit and polish items in this listing are also offered with free shipping!

The tumbling process for rocks uses a four step system with these abrasives and polishing materials.
Each kit contains the following four items:

One 25 Gram package coarse Silicon Carbide (60/90 grit) used in Step 1
One 30 Gram package medium Silicon Carbide (120/220 grit) used in Step 2
One 25 Gram package polish Aluminum Oxide (500 Pre-Polish) used in Step 3
One 25 Gram package polish Aluminum Oxide (Fine micron sized) used in Step 4

Remember, each of the above items is pre-measured for our convenience, making it easy to get the measurements right. This kit contains grit and polish only.
The abrasive media is shipped in separate plastic resealable bags.
this product is made in the USA and is of the highest quality used in the industry.
We offer many other Rock Tumbling Grit Supplies here.
Thank you.