3D Print Design: 14mm, 9/16" Socket To 1/4" Bit Adapter

[PJ]

This is my first 3D print design. I made the large hex a 14mm / 9/16" so that it would fit both SAE and Metric sockets or wrenches. It has the collar around it to more easily remove it from a socket and so that it won't pass all the way through a wrench. I think it could be useful but obviously its made of plastic. 

I'd print it with a 1.2mm shell, 60% infill, cubic. Here is a link to download it on Thingiverse.