wheel locking nuts bolts & locks. M12 x 1.5, 19mm Hex, Tapered Seat x 20
•Thread size: M12 x 1.5. •Spanner size: 19mm Hex. •Removal Key size: 19mm / 21mm Hex. What is M12 x 1.5?. The Hex refers to the size of the nut/bolt head and therefore the corresponding size of the socket used with the wheel brace.