Prime-Line Z 10532 Molly Bolt Standard, 1 1/4 inch, (50-pack)

What type of tools can i use to screw this mollly?

Once this is installed, can the screw itself be removed from the anchor?

I need to use these anchors but replace the screw it comes with to one that has a different head type, I need a head with a flathead screw. What size?

What is the difference between 10532 & 10533?