The Festool catalog pictures are confusing for the systainers which hold the delta sandpaper for the DTS 400 and the 5" discs for the ETS 125 - the pictures show a bunch of different shapes (round, delta, and rectangular) in front of the systainers in the pictures. Can someone post a decent picture showing the interior of these two systainers so I can see how they are laid out for those two shapes/sizes?