Parts to help you install MGN12H linear rails on the Y axis of your Sidewinder X2/X1/Genius?Genius Pro. Use the hold jig to assist in drilling the required mounting holes on the carriage plate for the bearing blocks. Use the Rail Jig, 3 of them, to align and space the rails on the 2060 Y axis aluminum profile. Use the Belt mount to hold the belt at the correct offset, no need to change belt motor or tensioner location. And use the end stop spacer under the end stop. This will require M5 and M3 hardware along with Tee Slot Nuts.