Set of 20 tuner slim nuts M12 x 1.5 + 17mm Hex star key for alloy wheels
• Thread size: M12 x 1.5. What is M12 x 1.5?. • Star key size: 17mm Hex. The Hex refers to the size of the nut/bolt head and therefore the corresponding size of the socket used with the wheel brace. What is Hex?.