Kohler Willamette Mixing Valve  (deleting shower head & tub spout for shower only) & (delete shower head in tub/shower setup)
Hansgrohe Handheld, solid hose & 24" Wallbar (replaces deleted shower head &shower arm)

Click Kohler or Hansgrohe above for info

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Hansgrohe system
Valve trim - Handheld, hose & wallbar - 5-3/8" Rain shower head
Valve Benefits 4 positions (1 off,  2 shower head only,  3 handheld only,  4 both)

Click Hansgrohe above for info