You have a lot of money wrapped up in your Model B single-drum tumbler, now make it more versatile with this kit which converts it to a double 3-pound drum operation. Conversion kit automatically adjusts drum speed for perfect operation. You can then run 3 pound, 6 pound or 15 pound batches. Comes with the two 3-pound drums and both quick-change shafts. Changeover time = 30 seconds!
Note: Save money when searching for rock which takes a good polish by testing it in 3-Lb batches. Then, when you find rock that will take a high polish, go big and run a full 15-pound load. It's a simple solution to an age-old problem.