Genuine Sloan 33080105 H-1018-A 1-1/2" Offset Adapter Graphite.  (H1018A PVDGR).

Features:

• 1" Female x 1" Male 1-1/2” Offset Adapter
• Includes mud guard and flange for easy installation
• Patent pending design allows optimal pressure and flow to the flushometer
• Inconspicuous aesthetic design provides an 1-1/2" offset to an existing water supply
• 1" FPT Inlet
• 1" MPT Outlet
• Low lead compliant
• The offset adapter shall be in conformance with ASTM Alloy Classification for Red Brass
• Graphite finish