This version of the lego lightning bolt blade has the bolts split so that they can be printed in different colors and joined together. Other than the split it is identical to its predecessor, Lightning Blade 2.

There are two versions included: one with a linear split and the other with more of a triangular notch (version with S2 in the name). Each STL file has both sides of the split. So printing once in each color allows two "blades" to be made.

So far the triangular notch version (S2) seems strong enough and less finicky for fitting: the linear notch has a tendency to print the notch more narrow than the prong resulting in too much stress from spreading. I haven't had any break yet, but I have also been judicious in which I attach.