This is a titanium 3/4"-16 motor plate stud, 1.65" overall, & .700" shoulder. These can be pressed in a steel or aluminum motor plate, 4 required per plate. The head is spot faced for screws to secure the stud to the motor plate. Use 2 -- 36FBH/stud to fasten M-1070-A2 to motor plate. See part numbers: M-211, M-212, M-212-T1,or M-213-T1 for the bottom bellhousing studs.