Steel balls / pellets (BBs) for air guns Material:AISI1008-1015,AISI1055-1085 Grade:G100-G1000 size: ... .5mm,6.35mm \ Production name Steel balls / pellets (BBs) for air gunssize4.5mm,5.5mm,6.35mmGradeG40,G100,G200,G500,G1000 ... per yearmore than 5000ton/year Steel balls / pellets (BBs) for air guns