What are these and can i delete them?

[HarleenQuinzel]

So I'm trying to clean my phone up and i find these files. My phone doesnt support opening them so i cant see what they are. Anybody know what they are and can i delete them?

 

[Tim1954]

I'd be weary about deleting anything if I don't know what it is lest you delete some important code and brick your device... If you don't know what it is, don't fiddle with it is a good policy

 

[HarleenQuinzel]

I havent deleted them but theyre takin up alot of space.