Quarter-turn Angle Stop - ID?

[Baumgrenze]

The attached image is of one of a pair of 1/4-turn angle stops installed in a recently added bath/wet-room. I find no identifying marks on them. Does anyone recognize this knurled rectangular handle? Should I expect decent service life?

Thanks,

baumgrenze

 

[hj]

You will get the same service life as any other one.