... or 5 Lug or 6Lug or 8Lug Aluminium Alloy Billet Wheel Hub Adapters, Hub Adapters For car,trucks,ATV ,Golf Cart ... wheels 1)Material: AL6061-T6 alloy aluminium. 2) Process: precision forged+ cnc machined 3) PCD: 100, 114. 3, 139.7mm, etc ... : M12x1. 5, M14x1. 5, etc. 9) fitting: tough hardened steel wheel studs 10)Certification: TS16949 11)Testing:Ultrasonic test 12) application ...