Check the listing for details. Stainless Steel shot for cleaning & burnishing Brass Casings(Pins .047" x .255"). Condition: New. Listed at 15.99 USD. These Stainless Steel pins for burnishing cleaning brass and brass casings are pre-cleaned and ready to use. You do not have to burn them in. With these pins your metal comes out shinier with no sticky residue from uncleaned pins. You can use any standard rotary tumbler with these pins. These are 304 Stainless Steel pins at the job specific recommended size measuring (0.047" Height by 0.25" Length) or (1.19mm Height by 6.477mm Length). Because of the materials precision high quality stainless steel content the durability of these pins is unmatched in the industry. This item contains a package of 11 oz. of Stainless Steel media.Instructions for Brass CleaningPlace the stainless steel pin media in a rotary or vibratory tumbler. Weigh out how much brass or other metal you wish to be cleaned; do not exceed your tumblers weight capacity. Add water to cover the media and brass. Add a few drops of dish-soap or similar. You can expect to run the tumbler about 30 minutes and 2 hours depending on the state of the items. Check after 30 minutes for progress.