0.3G/grain, 0.5g/grain, 0.6g/grain, 0.7g/grain, 1.0g/grain, 2.0g/grain, 3.0g/grain, 4.0g/grain, 5.0g/grain and so on . Absorbent Cotton Ball Features: (1)For wound treatment or absorption (2)The material: Highly-absorbent 100% bleached cotton, soft, compact and uniform in size and weight, and will not come apart when saturated. (3)Grams: 0.3G/grain, 0.5g/grain, 0.6g/grain, 0.7g/grain, 1.0g/grain, 2.0g/grain, 3.0g/grain, 4.0g/grain, 5.0g/grain and so on (4)Package: 5PC/pk, 10PC/pk or according to the clients requirement. (5)Sterile or Non-Sterile