Copying DVDs - Size Issues

[A face]

Ok, i need to copy instructional DVDs for work but the disk they gave me is 5.3 gig and my blank disks only store 4.7 gig as normal.

Can i get bigger size DVDs? Anyone know where?

[Battery Rover]

You need to get dual layer dvds but you will need a dvd burner capable of burning dual layer

Better option would be download dvd shrink and it will bring the file size down to 4.7gb

Its here http://www.dvdshrink.org/what_en.php and its free