Double wedge shape, proven geometry Müller stems with 135 degrees standard CCD angle in cemented, cementless, lateralized and revision versions. Raw materials are proven to have the best fatigue and wear resistance: cementes stem is made of REX steel, cementless is of titanium. Cementless mircoporotic surface can be titanium plasma or Hydroxi-apatite as well. With the wide range of stems, resps functioning as trial stems, the instrument set is one of the modernist hip systems. Heads connect through 12/14 Eurocone to the stems, sizes are in 28 mm and large ones are also available. Raw material is CoCr or ceramics.