Me: Hi. I'm here for a parts enquiry.
Recep: Ok take a seat, i'll come right over.
Me: Thank you.
Me: Hello. I need a R10W 12v bulb for a rear tail light.
Parts: An R10W bulb?
Me: Yes, for a rear tail light.
Parts: What car do you have?
Me: A3, 8P chassis.
Parts: 8P chassis? What year is it?
Me: On a 53 plate, post 2002-2003.
Parts: Oh after 2002-2003.
Parts: Would it be possible to show me the bulb.
Me: Ok wait here i'll go and take it out.
Take off rear left light, remove bulb and go back in.
So a little surprised. Thought they know there stuff inside out. Got the bulb in the end. Although he gave me a 10w so I swapped it for a 5w because 10w is too bright.