Olympus PPZR-EP02 Zoom Gear for 9-18mm and 14-42mm II m.Zuiko lenses in PT-EPxx Series Housings
This gear is for the M.Zuiko 9-18mm zoom and the SECOND GENERATION M.Zuiko 14-42 II lens (which ships with the E-PL2)
If you own a E-PL1 camera with the 14-42 lens, the PPZR-EP01 zoom gear is required.