What is the difference between US and Metric Pattern?
US - A 2.125", B 1.75", 1/4" Stud Hole
Metric - A 50mm (2"), B 40mm (1.5"), 8mm Stud Hole
CRG Front - A 60mm (2 3/8"), B 55mm (2 3/16"), 8mm Stud Hole