Thumler Model B - 15lb Heavy Duty Rock Tumbler gemstone Head Size: Assorted Head Shapes

Head Size: Assorted Head Shapes  (smallest 1mm- largest 3

Approximate Size for 1 piece: 40mm x 20mm x 20mm

Their superior quality makes them worth the additional costs

Head Size: Assorted Head Shapes Include Sphere

Thumler Model B - 15lb Heavy Duty Rock Tumbler gemstone Head Size: Assorted Head ShapesDescription: This is my most highly recommended rock tumbler. The barrel is large, so after waiting a month for the rocks to tumble, you'll get a large yield out of it. The hexagonal shape helps pick up the rocks better and create the slope inside that actually "tumbles" the stone. The barrel will not wear out, unlike Lortone tumblers that have a textured rubber barrel that loses its grip after a few years. USA made means it comes with factory