... 20W Ballast with Cable for Metal Halide Lamp 2.Brand: Holybay 3.Fn=50/60Hz Specification & SizeName HID Electronic Ballast for Metal Halide Lamp ModelGN020230VACEX(20W)GN035230VACEX(35W ... . We will use the 150W to modify for you.20W,35W,70W,150W,250W for Metal Halide lamps with CE, ROHS,ISO9001 in China ... does not affect the normal work. 20W Ballast with Cable for Metal Halide Lamp