Tonmp 5 Pounds 5/16 X 5/8 Inch Rock Tumbling Ceramic Filler Media - Large Cylinder Ceramic Pellets for All Type Tumblers

The size is just right for my rock tumbler

I liked these bigger pellets for tumbling with bigger stones. Really kept the grit moving. Definitely buying again.

This did the trick. My rocks dwindled in size so too maker up room in the tumbler, these worked perfectly. The batch I used seems good enough for another run, too.

Exactly as advertised. They work fantasticslly

Exactly what I wanted and at a great price. Best buy more than you think you need. I bought 5 lb but already considering re-ordering due to the volume of tumbling Ive found myself doing.