Help identifying front brakes.

Ok so I sprayed some wd40 onto the studs and will let it soak until tomorrow morning. Then I will try again by putting the lugs onto all 5 studs with the disc sitting flat on the ground and try to hit them as squarely as I can with hammer. Anyone ever have success doing it that way?
If it doesnt work (or if I bend or break a stud) I'll then take it to the brake shop and let them do It.