Steel balls / pellets (BBs) for air guns Material:AISI1008-1015,AISI1055-1085 Grade: ... :4.5mm,5.5mm,6.35mm \ Production name Steel balls / pellets (BBs) for air gunssize4.5mm,5.5mm,6.35mmGradeG40,G100 ... /TIANJIN/output per yearmore than 5000ton/year 4.5mm quality pellets (BBs) for air guns