REC-MOUNTS SGXCA-TREKW Pioneer Mount Type W for TREK Madone XXX Integrated Bar/Stem for TREK Madone XXX Integrated Bar/Stem Onry (Photo)# Older models and new models are incompatible for Pioneer Pedaling monitor (Cyclo Computer) SGX-CA500 The devices ready to use (Cameras) GoPro(HERO series) or Shimano Sport Camera or REC-MOUNTS(TM) Aluminium Light adapter IN THE BOX, Base Mount 1pc , M5 Bolt 1pcs Base Material ,6061 T6 Aluminium # Please check details of the specification on the manufacturer page