These are the mounting brackets of the popular Cable Chain (http://www.thingiverse.com/thing:11978) designed to fit the Hictop Prusa i3.
TIP: While the old bolts will work, you might want to use slightly longer bolts to make it easier.
CableChain_XCarriage.STL | 46.6KB | |
CableChain_XCarriage_v2-IncreasedTolerances.STL | 46.6KB | |
CableChain_XStepper.STL | 55.5KB |