... .3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.76mm BGA solder leaded balls the ball ... .3 ,0.35, 0.4 ,0.45 ,0.5 ,0.55 , 0.6, 0.76 mm........ (good quality )spec. = brand new ... .3 ,0.35, 0.4 ,0.45 ,0.5 ,0.55 , 0.6, 0.76 mm........ (good quality)spec. = brand new ...