Reinforced plate connector (PUMMR)
Used to join straight sections and to make curves. The amount to be used depends on the width of the tray. For widths of 10 use 2 units * For widths of 20 and 30 use 3 units * For widths of 10 use 2 units * For widths of 20 and 30 use 3 units. * For widths 40, 50 and 60 use 4 units.