The file 'MPCNC 525 J Drill Alignment Jig 3D Printer Model' is (stl) file type, size is 85.4KB.
Drill alignment jig for the MPCNC 525 J (1" OD conduit) version. Based on this drawing http://www.vicious1.com/wp-content/uploads/2015/08/zrail.jpg by Vicious1.