SparkFun Solder Vacuum Hand Tools Light / Imaging They come in a set

They come in a set of 4

but then again

but is large and cannot be embedded into a project as easily

it’s a super low frequency microphone for the ground

studying your activity or anxiety levels or just want your shirt to blink with your heart beat

SparkFun Solder Vacuum Hand Tools Light / Imaging They come in a setThe Solder Vacuum, a great (and sometimes under appreciated) little tool for solder rework. It allows you to pull the molten solder out of a connection or via with ease. To use it you simply depress the plunger, heat up your solder, place the nozzle over the solder you want to remove and finally just push the button. The piston pops up and the solder disappears! This solder vacuum has a black metal body with a hard plastic nozzle and buttons.