Will these fit my factory studs?

These are M12 x 1.5 thread — confirm your vehicle matches this spec before ordering. Acorn design threads directly onto existing studs with no adapters needed.

Do I need to prep or paint these before installing?

Polyurethane finish is ready to install out of the box. No paint or primer required. Clean your wheel studs before threading on.

Are these enough for all four wheels?

The 20-piece set covers five lug nuts per wheel on most vehicles. Verify your wheel has five studs — some trucks and performance applications run six or eight studs per wheel.