Billet adapters are made from 6061 aluminum round stock (solid bar). In stock size is 1.25 inches thick. Adapters can be custom cut to specific size from solid aluminum and machined center bore, bolt pattern and stud holes specific to the vehicle. The studs are grade 8 automotive studs as used on original equipment vehicles.
How to use the adapter chart: example 5450-5475 means the vehicle has a 5x4.5 bolt pattern and the wheel is 5x4.75 bolt pattern. Match the thickness letter with the bolt pattern that has the same letter, example size = 1.5 Inch E, bolt pattern = 5x4.75 to 5x4.5 E than it lets you add to the cart. Don't hesitate to call (310) 272-9026 for questions and orders.
5450 = 5x4.5 bolt pattern,
5475 = 5x4.75 bolt pattern,
5500 = 5x5 bolt pattern
5x4.5 through 5x4.75 bolt pattern adapter have a 74 mm hub hole.
5x5 adapters have a 78 mm hub hole.
the stud size in the 5x4.5 and 5x5 adapter is 1/2 inch.
The stud size in the 5x4.75 adapter is 7/16 inch.