2 Lbs 3/16" X 3/8" Cylinder Ceramic Rock Tumbling Media for Stone Tumbling and Polishing

They're exactly what you asked for. And yes you can fit them all back in the same jar after you take them out. Might not seem like it but you can.

Great tumbling medium. I'm ordering more!

Lasts a long time, does it's job, works great, would buy again.

As someone deeply entrenched in the world of craftsmanship, from jewelry design to 3D modeling and beyond, I understand the critical role that attention to detail plays in achieving exceptional results. Recently, I had the pleasure of incorporating the 4 Pound Rock Tumbling Ceramic Filler Media into my workflow, and I'm thrilled to share how it has elevated the quality and precision of my creations. **Superior Abrasion Resistance:** One of the most impressive aspects of this ceramic filler media is its exceptional abrasion resistance. Crafted with precision and attention to quality, each small cylinder of ceramic filler media boasts remarkable durability, ensuring that it maintains its shape and effectiveness even after extended use in rock tumbling processes. **Consistent Results:** Consistency is key when it comes to achieving uniform finishes and impeccable results in jewelry casting, 3D printing, and other crafting endeavors. The 4 Pound Ceramic Filler Media delivers consistent performance, effectively smoothing and polishing surfaces to perfection, regardless of the intricacies of the design. **Optimal Size and Shape:** The 1/8" x 1/4" dimensions of these small cylinder ceramic tumbling media strike the perfect balance between effectiveness and versatility. They effortlessly reach into tight spaces and intricate details, ensuring thorough coverage and impeccable results across a variety of materials and designs. **Efficient and Eco-Friendly:** I appreciate not only the effectiveness of this ceramic filler media but also its eco-friendliness. As a conscientious artisan, sustainability is always top of mind, and I'm pleased to report that this media is reusable, reducing waste and minimizing environmental impact without compromising on quality or performance. **Overall, the 4 Pound Rock Tumbling Ceramic Filler Media has become an indispensable part of my crafting toolkit. Its superior abrasion resistance, consistency, optimal size, and eco-friendly design make it the ideal choice for achieving precision and quality in rock tumbling, jewelry casting, and various other crafting applications. Whether you're a seasoned artisan or a passionate hobbyist, I highly recommend incorporating this media into your workflow for exceptional results."**

I'm new to rock tumbling - wanted to reduce stress on my rocks and this was recommended. So far, I've been using the same ceramic media and am on to my 3rd batch of rocks (going through 4 stages with each). Media looks as good as when i first put it in and seems to help reduce stress (cracks) on my rocks.