X2 (stretch X frame with ZMR arms)

This is a quadcopter stretch X type of frame that uses ZMR250 arms(I had spares and thought I might as well use them).
It can take up to a 6 inch prop.
I've printed one using PLA and the weight without battery or HD camera was 450grams, so on the heavy side, but it works fine as a practice quad having more than 50 flights and many crashes it still holds fine without any cracks.