Choose the model Watertight bulb 12 V 30 W 110 mm Watertight bulb 12 V 100 W 110 mm Watertight bulb 24 V 90 W 140 mm Watertight bulb 12 V 100 W 178 mm Watertight bulb 26 V 170 W 178 mm Watertight bulb 12 V 35 W 110 mm Watertight bulb 24 V 50 W 110 mm splined Watertight bulb 12 V 50 W 110 mm