Pelican 1561 4-Piece Foam Set Layers of foam are pre-scored in tiny cubes An easy do-it-yourself system for customizing the interior of you Pelican case Contents stay in place and get extra protection at the same time. Pelican 1561 Replacement 4 Pc Pick N Pluck Foam Set for 1560 Case Layers of foam are pre-scored in tiny cubes An easy do-it-yourself system for customizing the interior of you Pelican case Contents stay in place and get extra protection at the same time.