The following article highlights top plastic pellet media and related fillers used in rock tumblers. Each product is selected for durability, reusability, and noise reduction benefits. Use this guide to compare options for protecting fragile stones, cushioning tumbling action, and achieving smoother results across tumbler stages.
| Product | Brand | Approx. Size / Weight |
|---|---|---|
| Tonmp 2 LBS Plastic Pellets Rock Tumbling Media | Tonmp | 2 Pounds |
| HDongany 3 LBS Refill Plastic Pellets | HDongany | 3 LBS |
| Tonmp 3 LBS Plastic Pellets Rock Tumbling Media | Tonmp | 3 Pounds |
| Polly Plastics Rock Tumbling Ceramic Filler Media (3 lbs) | Polly Plastics | 3 lbs |
| Polly Plastics Rock Tumbler Grit Kit & Plastic Filler Pellets | Polly Plastics | Kit with Pellets |
This article covers five recommended options that balance safety, reusability, and performance in a variety of rock-tumbling setups. Each product profile includes a brief overview, primary benefits, and practical usage notes to help you decide which media best fits your tumbler, stone type, and noise reduction goals.
Tonmp 2 LBS Plastic Pellets Rock Tumbling Media

Tonmp’s 2-pound bag provides a dry, non-toxic plastic pellet filler suitable for cushion and protection during tumbling. The pellets are designed to be non-static and non-residue, with a packaging solution that reduces spills thanks to a durable, re-closable seal bag. These pellets are easy to reuse and offer a reliable medium for protecting fragile components within all tumbler stages. They help to minimize impact against delicate stones while maintaining steady tumbling action.
Key features include:
– Non-toxic, non-static, and non-residue composition
– Dryable for multiple tumbler sessions
– Re-closable packaging minimizes mess and storage issues
HDongany 3 LBS Refill Plastic Pellets Rock Tumbling Media

HDongany’s 3-pound refill package delivers a larger quantity of plastic pellets designed to cushion fragile stones and reduce tumbling noise. The media is described as non-toxic, non-static, and non-residue, with easy reuse due to float-to-top cleaning behavior. This option suits users who run frequent tumbler sessions or work with a variety of stone hardness levels, providing consistent protection and smoother action across stages.
Highlights:
– Reusable, non-toxic pellets
– Float-to-top feature simplifies cleaning
– Reduces tumbling noise while protecting stones
Tonmp 3 LBS Plastic Pellets Rock Tumbling Media

This Tonmp 3-pound option extends the same non-toxic, non-static, and non-residue properties to a larger quantity. It is designed to be easy to reuse and to float for simplified cleaning, helping maintain a clean tumbling environment and consistent results across multiple cycles. It’s well-suited for users who run longer tumbling sequences or who want to stock up for ongoing projects.
Main points:
– Non-toxic, non-static, dryable media
– Easy to reuse and clean
– Suitable for larger tumbler loads
Polly Plastics Rock Tumbling Ceramic Filler Media (3 lbs)

Polly Plastics offers a ceramic filler media in a small cylinder size, designed to cushion and protect stones during tumbling. The 3/16” diameter × 3/8” long cylinders are non-abrasive and compatible with all tumbler types. This filler is popular for reducing impact and quieting the process while maintaining effective tumbling action. It’s reusable and non-toxic, making it a practical choice for multi-stage workflows.
Key benefits:
– Non-abrasive ceramic cylinders for protection
– Works across all tumbler types
– Reusable, non-toxic, and non-static
Polly Plastics Rock Tumbler Grit Kit & Plastic Filler Pellets

This complete kit combines a multi-step grit set with plastic filler pellets for use in larger tumblers. It includes four grit stages (coarse to polish) and a bag of high-impact polypropylene filler pellets to cushion fragile stones and moderate tumbling noise. The kit is designed for a 15 lb tumbler or five 3 lb tumbles, offering a consolidated solution for hobbyists and crafters seeking a streamlined workflow.
Highlights:
– 4-step grit pack plus plastic filler
– Suitable for larger tumblers or multiple cycles
– All-in-one package for ease of use
Buying Guide: Key Purchase Considerations
Material safety and reusability
Choose media that is non-toxic and non-static to protect stones and reduce debris. Reusability matters for long-term cost efficiency; look for pellets that can be cleaned and reused across multiple tumbler sessions.
Compatibility with your tumbler
Consider the size and type of your tumbler. Ceramic fillers are ideal for cushioning, while plastic pellets offer universal compatibility and quiet operation. For multi-stage processes, a kit with varied grit plus filler may be most convenient.
Noise reduction and stone protection
Pellets designed to cushion impact help minimize noise and protect fragile stones, especially during the early or delicate stages. Check product features for explicit notes about cushioning and anti-static properties.
Storage and packaging
Durable, re-closable packaging reduces spills and keeps pellets dry between runs. This is particularly helpful for smaller workspaces or frequent tumbling cycles.
Cost efficiency and bulk options
Bulk options provide more value for larger tumblers or frequent users. Compare weight and capacity across products to estimate the number of tumbles you can complete before restocking.
Usage versatility
Some fillers are better suited for protecting stones in all tumbler stages, while others are optimized for quick cleaning or single-stage use. If you run a variety of stones, look for media that remains effective across multiple stone types.