Rail Stacker for Gravitrax

These little rail stackers hold ten rails each and are sized to fit between the gaps of each different length rail. Each stacker is embossed with a 1, 2 or 3 to identify which length of rail it holds. They are ideal prints for the end of roll filament, as they only require 8 to 11 grams to print.Here's a short video of how rail stackers work. Enjoy :-)