Magnetic tumbler media. You get 250 gram of Stainless steel pins that are approximately 0.5mm in diameter and 5mm long.
Tips on Using Your Magnetic Tumbler
*Do not use all the shot provided with the unit at once. There is always a bit of experimentation involved in the first few uses. As a starting point, place approximately 1/4 lb of the stainless steel shot in the plastic container for every 10 rings.
*After you have placed the shot in the bowl, fill it with water to between 1/3 and 1/2 full.
*Put tumbling soap / burnishing solution in the water.
*Put in your jewelry and run the machine for about 40 minutes.
*After your first "tumble", you should have an understanding of what you have to do to obtain the finish you require. Once you have established the proportions and tumbling times that give you the desired results, you will be able to consistently obtain the same results over and over.