Gear box for 2x13w, 2x18w 2x26w downlight, 70w, 150w, 250w, 400w, 600w, 1000w, 1500w, 2000w HID lam Gear box for 2x13w, 2x18w 2x26w downlight, 70w, 150w, 250w, 400w, 600w, 1000w, 1500w, 2000w HID lamp, Plastic case, metal case, waterproof or non-water proof are all available.