A 5 step grit kit for 6 pound rock tumblers. The kit consists of 6 ounces of 46/70 silicon carbide very coarse grit, 5 ounces of 60/90 silicon carbide coarse grit, 5 ounces of 120/220 silicon carbide medium grit, 3 ounces 400F silicon carbide fine grit, and 3 ounces of micro alumina polish. This kit is formulated for very hard rock. These kits are ideally suited for rotary rock tumblers. These kits are shipped free via USPS Priority Mail to all US ZIP codes. The foreign shipping weight is 24 ounces.