It is high grade bleached absorbent cotton ball . This is 0.2g Cotton ball for medical use. We can make the size of 0.5gm 1gmIf you are interested ,please email me ,then I can send quotaton to you ,we could assure you a super quality and prompt delivery time.Contact Person: Ms Nellie YangContact Mobile:0086-15151135324Package: 1kg/bag, 10kgs/carton