Set contains:
20x Wheel nuts
1x Wrench

Car makes use different types of thread for their wheel nuts and wheel bolts.
Before ordering, carefully check which wheel bolts or wheel nuts are required for your car.
Here are some examples of different types of wire types that occur the most:

Wheel nuts M12x1.5: Honda, Acura, Kia, Rover, Toyota, Lexus, Mazda, Mitsubishi, Alfa, Chrysler, Daihatsu, Ford, Hyundai, Ford, Citroen, Dodge, Lotus, Volvo, Infiniti
Wheel nuts M12x1.25: Nissan, Subaru, Suzuki, Toyota, Opel, Renault

Wheel bolts M12x1.5: Alfa, Citroen, Fiat, Opel, Peugeot, Renault, Seat, Skoda, Toyota, BMW, Hyundai, Kia, Mercedes, Saab, Volkswagen, Volvo
Wheel bolts M12x1.25: Alfa, Citroen, Fiat, Peugeot, Seat, Volvo
Wheel bolts M14x1.5: Alfa, Audi, Citroën, Peugeot, Renault, Skoda, Volkswagen, Volvo, Mercedes, Porsche, Seat.
Wheel bolts M14x1.25: Mini

The nuts are 60 degrees conical and fit most rims.
Width / thickness: 20 mm
Length: 32 mm
Material: High quality 304 stainless steel