Will these fit my wheels and studs?

M12 x 1.25 is the thread size — confirm your wheel studs match this pitch before ordering. If unsure, check your wheel fitment specs or test-fit one nut on a stud first.

Do these need any prep or coating before install?

The red anodize finish is ready to install as-is. Wipe the studs clean of dirt or rust before threading the nuts on; don't apply additional paint or sealant over the anodized surface.

Can I use these as a full set of five lug nuts per wheel?

Four nuts in the set — that's one per wheel on a four-wheel application. You'll need to order two sets for a five-lug pattern or verify your vehicle's lug count and buy accordingly.