This handy drilling guide is used to mark the hole centers when converting the wheel stub bolt pattern on a Ford Super Duty front axle wheel hubs from 8 bolt on 170mm to 8 bolt on 6.5 Inch bolt circle diameter.

Simply place the drilling guide over the stock wheel studs, then use the small holes and a punch to mark the exact centers of the new 8 bolt on 6.5 inch b.c.d. Drill your wheel hubs to your new desired wheel stud size and press into the wheel hub.

No guessing! Ensure your new wheel stud pattern is concentric to the wheel hub.
Constructed from 1/8 inch Steel and precision laser cut. Weight = 0.5 lbs