This is a genuine ADR 903C18D21B wheel bolt, engineered for robust performance in agricultural and industrial machinery applications. Featuring an M18x1.5 thread, this high-strength bolt has a total length of 72 mm and a shaft length of 66 mm, with a knurl diameter of 21.5 mm and a head diameter of 30 mm. Manufactured to a 10.9 grade, it ensures secure wheel attachment and durability under demanding conditions.