Our Four-Step Grit Kit is maximized to tumble a wide variety of rough rock -- from soft to hard -- and contains enough grit to tumble 10-14 lbs. of stones. Step 1 (coarse) is a combination of 60/90 grit; Step 2 (medium), 120/220 grit; and Step 3 (fine), 500 and finer. Step 4 is a top quality tumbling polish (CPP) with an alumina base.

Each jar has a screw-on lid and the set contains 52 oz. of grit (Step One =16 oz, Step Two =14 oz, Step Three=12 oz, and Step Four =10 oz).