Foot pump Baku bk-106 syringe device with spring mechanism, for working with soldering iron, removing surpluses solder

Tin pump is a syringe device with a spring mechanism inside and a silicone tip. This tool is designed to work in conjunction with a soldering iron to remove excess solder from through mounting holes, where the work of the nozzle is complicated. After lifting the spring to the working position, the internal valve in the drive moves to the very bottom and when released sharply rises up, creating an effect of suction and absorbing.
For maximum efficiency, you need to position the tip to the area being processed as close as possible.