【High efficiency solder sucker】 - the desoldering pump designed with double ring and "vacuum" open button, you can remove solder from circuit board effectively by cocking it and pressing the trigger button with one hand. 【Desoldering Wick with Copper Braid - Solder wire】3 pieces copper solder braid in 3 size, width 2.0mm/2.5mm/3.0mm, length 1.5m, 2 pieces for each size; geometrically-precise weave, can be used to clean the spare solder on the pin away to avoid short circuit, to meet your various of soldering needs. 【Lead-Free Solder Flux Wire】The pocket solder core reduces oxidation of the welded metal.Weight: 8g; Welding wire diameter: 2mm; Flux content: 50%; Welding current: 50A; Melting point: 200℃. 【Double ring air leakage protection】 Using double sealing ring design, strong suction, can effectively prevent air leakage. 【Application】This practical tool is suitable for precision instrument cleaning, laboratory work, and industrial soldering. It helps remove solder and correct errors on small PCB boards.