See if you can figure out what this tool is for

Integrated brake bleeder wrench/overflow tube?

It slips over the brake bleeder nut/nipple and allows one to tighten and loosen the nut, as needed, all the while the tubing remains in communication with a bottle or container of brake fluid that allows bleeding or reverse uptake as neccesary.

I have four of these so I can set up them all into bottles and quickly bleed the brakes while all the hoses are kept below the brake fluid level in the bottles.

It sounds more complex than it is - good product in my estimation. Someone had been selling sets of four on Pelican for less than $40.

Yep, all in one brake bleeding tool.

Very smart device!!! I hate bleeding brakes alone... Thats why I always have a power bleeder, but still always find I need to do pedal bleeding as well.

Even better.

Never saw that before.
Very cool.
Have had consistent good results with the reliable method the this tool simplifies.

I agree. Those coupled with the long tube method never fail.