Pelican™ 1646 6-Piece Pick N Pluck™ Foam SetThe foam set is an easy do it yourself system for customizing the interior of your case. Layers of foam are pre scored in tiny cubes. Simply lay your equipment on the foam, tape or chalk to mark the foam, and pluck away. Always allow at least one inch of foam between your equipment and the wall of the case. The Pelican 1646 9pc replacement foam set is specifically designed to fit the Pelican 1646 Air Case.