ROBERTSON 3P10007 BLU0070A04900 HID Reactor mBallast Kit, High Pressure Sodium, 70 Watt (S62), NPF, 120Vac., 60Hz Equivalent to: PHILIPS-ADVANCE 71A7907, OSRAM SYLVANIA LU70/120R, UNIVERSAL 123314U0001 Equivalent to: HATCH GS70ARNCK, KEYSTONE HPS-70R-1 Save by ordering the Quik-Pak of 4 individually packaged units with ROBERTSON 2P10007 Two Year Factory Warranty-ONLY if the Amazon Seller is ROBERTSON Worldwide. Take advantage of ROBERTSON's 60 years of electronic design and quality manufacturing experience