The Cream Finishing Compounds are designed to be used with Hardwood Media and with abrasive grit products like Walnut Shell Grit and Corn Cob Grit. Each Finishing Cream is designed to provide a specific level of abrasiveness or polishing. This products in this line are specifically engineered for use with either metal or plastic parts. You can find details here.
The Premium Recharge Additives are used to extend the life of the Premium Treated Tumbling Media. These Recharge Additives are specifically designed for the various levels of cutting or polishing the Media is designed to accomplish. Using the Premium Recharge Additives can provide a lifetime for many Media that are three to four times their typical usage. More information is available here.