Rock Tumbler Grit for 15 pound Tumbler 4 step grit set with instructions for use in a 15 pound tumbler, or 5 3lb tumbles 1 pound 60/90 Coarse Silicon Carbide Grit 1 pound 120/220 Medium Silicon Carbide 1/2 pound 500 Fine (pre polish) Silicon Carbide Grit 1/2 pound 1200 Aluminum Oxide Polish