Will these fit my valve stems?

These are designed for standard valve stem sizing. Test-fit one cap on a valve stem before installing all four to confirm proper seating on your specific setup.

Do I need to prep or paint these before installation?

No prep needed. The anodized blue finish is ready to install straight out of the box. If you want a different color or finish, these can be refinished, but they're designed to go on as-is.

Can I remove these without tools?

Yes. The hex design is grip-friendly by hand, and the mid-cut recessed opening lets you access the valve stem quickly without fully removing the cap if you need to check pressure.