... inch ( 3.3MM) Model : steel shotMaterail : low carbon steel Size : 4# 0.130 inch ( 3.3MM )Hardness: < HR15T 78Condition: Annealed, Zincplated, Copper ... and non-military cartridge projectiles.BallastsPacking : bulk package ,bottle, plastic box ,poly bag etc.Factory ProductionPacking shot ball for hunting