Features: _x000D_100% brand new and high quality. _x000D_These tin balls are used for connection of semiconductor chip, circuit module and PCB board. _x000D_They are quite small and can transmit electronic signal. _x000D_Each bottle contains about 25000 solder balls that will meet your basic need. _x000D_There are many different sizes you can choose, and you can choose 9 bottles to get them all. _x000D__x000D__x000D_Specification: _x000D_Type(Optional) Quantity Size Weight _x000D_#1 9 bottles 0.3 200g/7.1oz _x000D_#2 1 bottle 0.35mm 9g/0.3oz _x000D_#3 1 bottle 0.4mm 10g/0.4oz _x000D_#4 1 bottle 0.45mm 13g/0.5oz _x000D_#5 1 bottle 0.5mm 16g/0.6oz _x000D_#6 1 bottle 0.55mm 18g/0.6oz _x000D_#7 1 bottle 0.6mm 25g/0.9oz _x000D_#8 1 bottle 0.65mm 28g/1oz _x000D_#9 1 bottle 0.7mm 36g/1.3oz _x000D_#10 1 bottle 0.76mm 40g/1.4oz _x000D__x000D__x000D__x000D_Package list:_x000D__x000D_1 Set of Solder Balls(include 9 specifications) 1100% brand new and high quality. 2These tin balls are used for connection of semiconductor chip, circuit module and PCB board. 3They are quite small and can transmit electronic signal. 4Each bottle contains about 25000 solder balls that will meet your basic need. 5There are many different sizes you can choose, and you can choose 9 bottles to get them all.