JDM ASTAR Extremely Bright 120-EX Chipsets White/Yellow 1157 2057 2357 7528 Switchback LED Bulbs with Projector For Turn Signal Lights Package contain one pair EX chipsets switchback led bulbs.Buy with confidence Light up Xenon white for parking lights or daytime running lights. Light up Fit 1157 1157A BA15s S25 2057 2357A 7528 P21/5W double-filament bulb.Dimension (inches): 0.71 in diameter, 2.05 in length The bulbs equipped with constant-current driving IC and Aluminum Circuit Board ,heat-resistant, The 50w 6ohm load resistor or flasher relay might be needed to prevent the hyper flash or the bulb does not blink.