A 4 step grit kit for 3 pound rock tumblers. The kit consists of 3 ounces of 60/90 silicon carbide coarse grit, 3 ounces of 120/220 silicon carbide medium grit, 1-1/2 ounces of 400F silicon carbide fine grit, and 1-1/2 ounces of micro alumina polish. These kits are ideally suited for rotary rock tumblers. These kits are shipped free via 1st class parcel service to all US ZIP codes. The foreign shipping weight is 13 ounces.