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. Feel free to write in the "NOTE" field if you want us to make it more and use the enclosing cup at the back) - 30mm 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