With the Cherry Pi or other Delta printers, the only way to adjust tower height is adjusting either the top mount or the Stepper motor position - If your belts get loose (common during initial build and burn in) you'll need to make adjustments, frequently requiring re-calibration.
This end stop holder permits belt tension adjustment (via either motor movement or top mount) and use of the more common (yet slightly larger) end stop switches.
This part is designed for use with Openbuilds extrusion with a 10mm m5 bolt, but most likely will work with any 20x20mm extrusion. Additionally the more angular corner is for permitting movement of the belt used in 2020 extrusion based delta designs.
Note: I've included a "Stop/Break" into where the switch can be inserted making it impossible to insert switches the wrong way. Please note the annotation on the side of the item. This also stops the switch from moving once it's settled.