The short shifter is made of steel s235/c45. You don't need any other parts for assembly, nothing to drill or modify - we unscrew the old selector and insert the short shifter from inside the car - we insert a threaded washer from the bottom of the car and screw it on. The gearshift handle is not included. Can also be adapted to e28/e30/e34/e39 and others with a crosshead with a diameter of 10mm
