It is a hinge and clips to itself! Just scale it for a wrist band or a belt and print out as many as you need for the length! I will create some other things that can link to these as well.When you upload this item to your printer slicer, be sure to position it ON ITS SIDE when printing so that the support in the push tab does not restrict operation. With the small file you can create a bracelet, or with the large file you could print out a cool belt. Just print out as many as you need to fit around your wrist or waist. I haven't tried to print out the larger version just yet, so it might be a bit stiff to push the tab in at that size. Hinge Link HD is high poly, upgraded a bit, and rounded off better, so that might be the best one so far. Best results from cleaning up all bits of support around the joint area before flexing the joint. If the joint does not swing when just wiggling it then there is debris still in the joint area.