Complete 4-Step Kit: Includes 6 lbs of polishing grits—4 bottles with Silicon Carbide for coarse, medium, and pre-polish steps, and Aluminum Oxide for final polish. Polish Up to 40 lbs: Ideal for tumbling up to 40 lbs of rocks, making it suitable for large projects or multiple batches. Easy to Measure & Store: Comes with two spoons and individual packaging for each grit. Simple to measure and store with no mess. High-Quality Grits: Contains 2 lbs of Silicon Carbide for coarse and medium grinds, 1.5 lbs of Silicon Carbide for pre-polish, and 1.5 lbs of Aluminum Oxide for final polish. Compatible with Any Tumbler: Works with all rock tumblers. Explore our range of tumblers and accessories for a complete lapidary setup, suitable for all skill levels.