IMPORTANT: As of May 01, 2018, Japan produced vehicles use lug nuts with 17mm hex head instead of 21mm the thread remains the same.
Use C9N1V9740 wheel lock set if the vehicle is built on 5/1/2018 and after, and the VIN is equal to and higher than: 2018 MAZDA3, JM1BN1L39J1191046 2018 MAZDA6, JM1GL1UM9J1316386 2019 CX-3, JM1DKFC76K0406293, JM1DKFC76K1406305 2018 CX-5, JM3KFBDMXJ0405520, JM3KFBCM7J0405511, JM3KFBDM8J1404456 2018 CX-9, JM3TCADY5J0231737 2018 MX-5, JM1NDAM70J0206203 2019 MX-5, JM1NDAB76K0300011