There are many possibilities for the contact surface of the hub: 60 degree taper seated, R12 ball seated, R13 ball seated, R14 ball seated, flat seated, etc. For safety driving, lug nut contact surface must match the contact surface of the wheel lug nut bore. Incorrect selection may cause the nut too loose during driving, which seriously affects driving safety. Therefore, it is recommended to contact BONOSS professional customer service before purchasing, we will provide you with professional and accurate services.