This is my version of the Batman utility belt components from the Batman vs. Superman movie costume. I went off of found photos of the belt taken at a 'con of the screen used costume, so it will not be 100% accurate.
I've included two versions of the buckle; a half and a whole. You can print the half x2 stood up on the joining end to reduce the chance of warping.
PowerSpec Ultra 3D (Flashforge clone)
Most parts can be printed without support if positioned correctly. The Knurled Cylinder Cap should be printed in high resolution with a good slicer to get the detail of the knurls.
I used Autodesk 123D Design to create these pieces. The knurling was borrowed from the Knurled Pencil Pot, thing:32173.