Get started with rock polishing right at home. The Lortone 3A Rotary Rock Tumbler smooths and polishes small stones, perfect for hobbyists, home jewelry makers, rock collectors, crafts, and more. This rock polisher tumbler is best suited for small stones up to 1.25 inches across. With a single molded rubber tumbling barrel, you can polish a small "batch" of rocks at once. You can polish up to 3 pounds of rocks thanks to the rock tumbler's 4.1-inch depth and 3.9-inch diameter. Easy to use, this rock polishing machine is great for folks just getting started with the rock tumbling hobby. You'll get an instruction booklet with the rock tumbler that walks you through how to use it and what type of abrasive you'll need. This rock polisher comes as the tumbler only. Rocks, polish, and abrasive are sold separately. As a rotary rock tumbler, the Lortone 3A polishes stones in 4 stages. Each stage takes 7 days and uses different types of grit to wear away at the stones' rough edges. To fully polish stones, you'll run this rock polishing tumbler for 28 days. The rock tumbler is designed to run 24/7, so you can simply plug it in and let it run. With a small 9.5- by 6-inch footprint, this rock polisher is small enough to fit practically anywhere. Get smooth, polished stones with the Lortone 3A Rotary Rock Tumbler.