"SV" models have a dial speed control to control intensity and rotation.    The KG-1 and MT-4 Mini-Sonic vibratory tumblers are handy, compact versions of the larger Mini-Sonic electronic tumblers.  Both have the same patented tumbling action, same quiet operation when they are at work safely polishing your stones.  

These Mini-Sonic tumblers will process almost any type of stone - from opal to topaz as well as shells, metals, etc.  Tumble polish baroques, preforms, beads, etc. fast and efficiently without changing the shapes. 

Both are handy sizes.  The KG-1 has about a 2.2 pound load capacity - a good size for kids and those just wanting to polish small batches of stones.  The MT-4 has a larger capacity - about 4 pounds load and grit - and is suitable for anyone wanting to tumble stone or metal parts in modest quantities.

We provide sample grit kits with each of these machines. 

These tumblers are top performers when it comes to long life and little maintenance.  They operate without shafts, belts, pulleys, eccentric weights or even a motor - no moving parts to wear out.  Even the hoppers give exceptionally long wear.  They are made of cast polyvinyl, while the tumbler housing is durable ABS plastic.  You will get a tumbler built for years of worry-free service.