Features: It has good electrical conductivity and mechanical connection performance. With this product, it will not be necessary to clean the welding plate and directly drag the tin point on the main board and bridge for BGA welding, which will be faster and will not damage the welding plate due to errors. Widely used in white tabletop, flux, organic synthesis, chemical production, alloy production, and the assembly of many integrated circuits in the electronics industry.7 bottles of 12.5K solder balls as follows:1 × 0.25mm lead solder ball 12.5 K1 × 0.3mm lead solder ball 12.5 K1 × 0.35mm lead solder ball 12.5 K1 × 0.4mm lead solder ball 12.5 K1 × 0.45mm lead solder ball 12.5 K1 × 0.5mm lead solder ball 12.5 K1 × 0.6mm lead solder ball 12.5 K Solder Ball Specification: Alloy Balls: Sn 63/Pb 37Color: SilverBall Size: 0.25mm/0.3mm/0.35mm/0.4mm/0.45mm/0.5mm/0.6mm (Diameter)Quantity: 7 BottlesNote: No retail package Transition: 1cm=10mm=0.39 inch Please allow 0-1cm error due to manual measurement, please make sure you do not mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Included:7 Bottles x Soldering Ball"