Two pieces: a forged centre and a forged barrel, bolted and sealed. It gives you the lip depth of a multi-piece wheel with fewer joints than a three-piece, and the barrel can be replaced on its own.
The barrel is separate, so concavity and lip can be set independently of the face.
Damage one barrel and you replace one barrel — not the set.
Two parts means fewer seals and fewer bolts to check.
Best for: cars that want a lip, and owners who keep wheels for years.
Year, model and trim is enough to start. Brake and suspension details make the drawing exact.