Derby Dust Bullet Coating Reloading Tumbling Tumble Media Stainless Steel 1lb 1 Lbs. Jewelers Stainless Steel Tumbler Shot Burnishing Mix incl.Eclipse-Diagonals-Pins, 3/16 eclipse shaped 3/16 x  diagonals 1/8 x  diagonal pins 1lb is more than plenty to tumble!