How do I screw this up?

[Fgiss]

Hi,
I bought a new car that has a mounted dog crate. I was thinking of modifying it a bit but the person who made it has used something that I don't understand what it is to screw it together. Are they rivets? How do I remove them if so?

Thanks!

 

[RoTe]

It's called a popnit and you drill them out.

 

[TommyC]

For example, start by drilling with a drill bit that is 1 mm larger than the hole in the rivet; you may need to go up a size in drill bit if the head does not come loose.

 

[tergo]

test with a 3.2mm drill, standard size for rivets

 

[Fgiss]

Thank you! Once I've removed them, can I then put in a new pop rivet? I was thinking about replacing these.

 

[RoTe]

Yes, if you buy a kit with rivets and pliers then.