7 Marble Run kits
6 metal trays
Design marble runs by attaching parts onto a whiteboard or metal tray.
Marble Run Instruction Book (.pdf)
From the Instruction Book - 8 core principles of designing in marble run...
 Marble Run Beginner.pdf
Marble Run Beginner.pdf Marble Run Advanced.pdf
Marble Run Advanced.pdfMagnetic Marble Run - 150-Piece - Amazon $70
Metal 47" x 25" Drip Pan - Amazon $90