Will these fit my wheel's lug hole?

These are M12x1.25 metric thread — confirm your vehicle uses this spec before ordering. If your car runs M14, M10, or a different thread pitch, these won't work.

Do I need a special key or tool to install them?

The knurled design lets you hand-tighten, but you'll still need your lug wrench to seat them fully. A torque wrench is recommended to reach spec without over-tightening.

Can I mix these with my stock lug nuts?

You can, but for safety and appearance, run a full matching set of 20 across all wheels. Mixing materials and designs can create uneven clamping pressure over time.