Aluminum, anodized and laser engraved with Loose & Lost's favorite tire dude. If your engine is slow it might as well look good!
There isn't a Toyota I have found that these caps don't fit yet. 22r, 22RE, 2RZ, 3RZ, 3VZ, 5VZ, 1UZ, 2UZ 1GR, your girlfriends corolla, and your Mom's Camry with a screw on style cap. Doesn’t fit a 2jz we have learned. I'm sure there's exclusions like a forklift or maybe some super new plug in hybrid with no oil etc.