3/16 X 3/8 Ceramic Cylinders For Polishing 2.5 LB Ceramic Media For Rock Tumbling, 3/16" X 3/8" 2.5LB Grit For Rock Tumbler It's quick-drying and durable enough to last through all tumbling stages, saving you money on replacement filler and separate media. Ceramic Triangle Tumbling Media - 3/8 x 7/8 Size (25lbs Maximize Tumbler Efficiency & Capacity:The 2., 5 LB volume is perfect for filling barrel space, allowing smaller loads of rock to tumble effectively. Largest size stone for a 3 lb tumbler Durable, Non-Toxic, & Residue-Free:Made from high-quality alumina ceramic, this media is built to last. Works seamlessly with both rotary and vibratory tumblers and any brand of grit or compound. Polly Plastics Rock Tumbling Ceramic Filler Media (Small Cylinder Size) Non-Abrasive Ceramic Pellets for All Type Tumblers (1.5 lbs) 4.6 (1.8K) 40 bought in past month $2595 It also significantly reduces tumbler noise for quieter operation. This means your rocks polish more evenly and efficiently from the coarse grind to the brilliant pre-polish stage. Ideal Size for Superior Polishing:Crafted in the perfect 3/16 x 3/8 cylinder shape, this media improves grit circulation and distribution.