Will these work on my vehicle's lug studs?

M12 x 1.5 is a common metric thread size. Verify your current lug nut size before ordering — if you're already running metric hardware, these will thread on directly.

Do I need any special tools to install these?

Standard lug wrench or impact socket will handle installation. Tighten to your vehicle's specified torque value — refer to your owner's manual or service documentation.

Can I mix these with my existing lug nuts?

You can, but matching all twenty around both wheels keeps weight distribution consistent. If you only need to replace a few, that works fine too.