Corundum Tumbling Media - 4mm Abrasive Spheres For Rock Tumbler Pre-Polish 1kg

If you're into rock tumbling or polishing metal parts, you'll want this.

It's a 1kg bag of 4mm corundum spheres from Bullioncare.

Corundum is a super hard abrasive, perfect for the pre-polish stage.

Use it in your rock tumbler on stones, glass, or even softer metals like brass, copper, silver, and gold.

It's made in Australia, and it's reusable and corrosion-resistant.

Just load it up with your material and let it run.

Great for achieving that smooth, semi-polished finish before the final polish.

Whether you're working with acrylic, aluminum, or actual rocks, this media gets the job done.