Modular and adjustable to make a flexible conveyor belt. 

Everything is printed without support in PLA or PETG. The parts are easily assembled and disassembled with a click function. Just press them together and you're done. The belt can be driven forward and backward using the small turning pin. Each rail piece has holes for screws if you want to fix it to something. 

I have printed the parts with 0.16 in layer height which has worked well but I think it would work with 0.2 as well. In this setup there are 24 rail pieces and 48 belts.