A longshot. Does anybody recognize this part or what it fell off of? The red plastic head is a hair over an inch in diameter. The only markings are "on" and "off" on the head for CW and CCW rotation. It had some oil on it, so between that and how it's built, it must be an on/off valve for some hydraulic device.
I found it in a pile of tools on the floor while I was swapping a rear strut on a Subaru. It couldn't possibly have anything to do with what I was working on, yet it's very troubling to find a loose part when finishing a job!

I found it in a pile of tools on the floor while I was swapping a rear strut on a Subaru. It couldn't possibly have anything to do with what I was working on, yet it's very troubling to find a loose part when finishing a job!

