LED HID Retrofit Lamps from Satco Products, Inc. with a Mogul (E39) Base, 50W - 99W For Enclosed Fixtures where Color Temperature (Kelvin) is 4000-4999, Bulb Power Type is Ballast Bypass, and HID Equivalent is 320
$455.96$399.80($99.95 per Bulb )You save 12%