This adaptor is the most popular item a person would need if drivetrain stability is key in performance. It`s ment to be mounted on top of the 108mm Porche 930 flanges almost every Quick Change comes with and allow you to mount a Half-Shaft with the most popular 122mm CV joints which are used by almost all companies for half-shaft kits (including our 1500hp ones). Key features: - 7075 aluminum - high-strength alloy widely used in aerospace, military, and high-performance sporting goods - 108mm mounting diammeter with 6x94mm PCD - 122mm (-0,3mm) mounting diammeter for the CV joint (CV joint mounts without enclosing cup at the back. - 25mm thickness allowing for maximum CV joint travel without interfering with bolts etc. - Blood Red anodised Note: -price is for set of 2 flanges -flanges feature m12x1,75mm threads for the CV joint