This is mount for bltouch/3dtouch probe for Titan plate (https://www.thingiverse.com/thing:3510996) with Titan+e3d extruder.
The probe touch point should have the same position in Y plane and 30mm left in the X plane.
It uses two M4x8mm screws to mount to the same holes on top of Titan mount. Before mounting put two M3 hex nuts into slots. To mount probe use two M3x6mm screws (for longer screws put them through proper washers first otherwise they will push against titan mount and lower the probe).