Amazon.com: Performance Tool W83016 7pc Triple Square Bit Set Compatible With VW, Audi, Porsche and more : Automotive
Amazon.com: ATLIN Head Bolt Tool for VW and Audi Vehicles, Polydrive Head Bolt Socket, Fits VW and Audi Head Bolts, 6-Point, 10-millimeters : Automotive
What kind of bolt head is this? VW Golf 2016 driver's door : r/MechanicAdvice