Those are completely renewed half shafts with 110mm CV flanges for the differential. The splines of the hubs are upgraded to 33mm ( for comparison all of the mentioned come with 25mm splines, and all w140/w220 come with 27mm splines). We mostly use 38mm shaft diammeter which is 4mm more than the Turbo-Diesel ASD shafts people tend to use (which are the strongest OE you can find). These half shafts can handle up to 750 NM with ease, which is almost twice more than the strongest ones installed on w124 and w201 and etc. Weight is almost the same as every stock half shaft which means 0-10% more weight with almost 100% more strenght! The kit includes hubs which are made to adopt the bigger splines which is one of the biggest problems of people with powerful M-B cars. What you receive is what you see on these pictures: - 2 high end refurbished 110mm CV half shafts - 2 machined wheel hubs with 5x120 and 5x112 holes and 33mm splines - 2 new nuts for tightening the wheel bearings - 2 new centering cups for the differential flanges - 33mm splines for the hubs THIS KIT FITS ALL of the above mentioned wheel knuckles with a 45mm inner bearing sizes (onlt T-modells and amg versions come with bigger than 45) Please check the last picture carefully and pick your axle shaft length correctly! Pick the size closest to the one you measured! FEEL FREE TO ASK ANY QUESTIONS REGARDING YOUR REAR SUBFRAME AND DIFFERENTIAL COMBO! WE MAKE OUR HALF-SHAFTS CUSTOM LENGHT!