This is an End stop holder that is easily configurable,
If either of the clamp flags are not needed, they can be broken off withough compromising the strength of the rest of the unit.

I originally designed this for my Prusa i2, as (like most Prusa owners) i found about 13mm of My Y-axis movement had been strangled by the existing setup, this reclaimed me that extra bit of difference - since then it's come in useful for a number of printer designs...

The spacings on the flag are correct for the majority of mechanical switches - but I can always modify this for anyone, if you ask nicely ;)\