This mount fits my MarkerFarm I3V 12" x-carriage. I assume it should fit the 10" and 8" as well, as I believe the carriage parts are the same. All you'll need to use it is a slightly longer screw (preferably pan head so it doesn't block the BLTouch mounting screws) to replace the one that holds the triangle carriage piece on the right side of the carriage to the horizontal plate. It has a lip and a tab that then lock it in place. It will offset the probe from an E3D V6 by 45mm x 21mm x 2.5mm (x,y,z).