Metallica is offering hardcore fans a "coffin box" edition of its upcoming album, "Death Magnetic," due in September via Warner Bros.

In addition to the album, the package will include a disc of demos, a behind-the-scenes DVD chronicling the making of "Death Magnetic," a T-shirt, a flag, guitar picks and a poster.

Also featured is a Metallica credit card with a code redeemable for a download of a "special European show happening in September." This edition is only available from the band's Web site.

As previously reported, Metallica is offering a variety of insider perks to fans who join its Mission: Metallica club, including "fly on the wall" studio footage, contests, merchandise and downloads.