All sizes shown on the website for Porsche Lifestyle products are EU sizes.

Complete 1990 Universals & Rear Axle Axle Shafts & Joints Parts List
Shortcode = 1990 Porsche 911 Carrera 2 GAS 3.6 V 6 Transaxle Automatic 4 UNIVERSALS & REAR AXLE Axle Shafts & Joints