Usually the boxes of screws come with the bottom, more silver bit. But today’s box had the duller grey, bit with a green lap band. No idea if one is better than the other or not.
Edit: Thanks to @0x0@infosec.pub for the wiki article!
Bits like that are used for impact drivers
I am using a cordless impact driver, which is like a cordless drill. Rather than what a lot of people imagine, an air driven impact wrench.
Vs
My impact driver accepts the same bits I would use in my cordless drill. I do have some attachments so I can use sockets and such in it for auto repairs. But I now have a cordless impact wrench I use for that more often.