Package Included : 4*LED Bulbs H7 HeadlightThis listing do not included bulb adapter, some of the car need add bulb adapter to get the LED bulbs replace the halogen bulbs!Error Free: No, some cars will still need extra resistors/adapter.Note: This item dont come with CANBUS Error Free function.Before buying:a)Please check the Correct item size of your vechicle. it will work and fit.Thank you!b)If you are unsure the item fit or not , please do remember send message to tell us your car make, model, year and other information which is helpful to check the item fit or not.Fitment:(1)Model :For VW POLOYear :2009 2010 2011 2012 2013 2014Trim :1.6-TDi,TDi BlueMotion-TDi,TDi BlueMotion-6R1Engine :1598ccm,66KW,90PS,Diesel(2)Model :For VW POLOYear :2014 2015 2016 2017Trim :1.4-TDi BlueMotion-TDi BlueMotion-6C1Engine :1422ccm,66KW,90PS,DieselSpecifications:Voltage: DC 9-32V ( Fit 12V Vehicle )Placement on Vehicle: Front, left, rightWaterproof IP Rate: IP68LED type: COB LED(Headlight)Beam Angle: 360°Color Temperature: 6000K WhiteOperating Temperature: -40 - +80°CApplication: Headlight LightsApplication: Headlight High or Low Beam / Fog Light / Driving Light / Daytime Running LightLED replacement bulbs are engineered for superior performance, exceptional looks, and increased safety.To Fit: Headlight Bulb KitQuestion : Warning About Polarity ! Neither bulb lighting up?Answer: LED Bulbs are polarity sensitive.Before installation, Please simply plugging the LED bulbs into your vehicle socket to verify the polarity on your vehicle.If LED bulbs turn on, please proceed to install.If LED bulbs DO NOT turn on, reverse the polarity and connect again.