hansgrohe 88590000 - Google Search
https://www.google.com/search?aq=t&client=firefox-a&ie=utf-8&oe=utf-8&q=Hansgrohe+88590000&rls=org.mozilla:en-US:unofficial#q=Hansgrohe+88590000&hl=en&client=firefox-a&hs=bDF&rls=org.mozilla:en-US:unofficial&prmd=imvns&ei=uOnoTvi_FaX00gGCvImTCg&start=20&sa=N&fp=1&biw=1622&bih=949&bav=on.2,or.r_gc.r_pw.r_cp.,cf.osb&cad=b
...is this what I'm looking for?
Hansgrohe 06494 Croma E Three Function Hand Shower with Hose and Slide Bar
http://www.build.com/hansgrohe-06494-croma-e-three-function-hand-shower-with-hose-and-slide-bar/p384149?baid=558673909&source=spg_384149
Could this be the part I'm looking for?