This part is a plastic fusible link in ZSK commercial embroidery machines. When the operator incorrectly sets up a design the needle can impact a hoop or other hard object. the plastic link breaks before any of the metal linkage. This is a replacement part that can be printed to replace the plastic link. The second picture shows the pins in place in the replacement and an original link, with no binding, indicating the measurements are correct on the replacement part.Measured from an intact part, parametric modelled in openSCAD, print and test. To use remove the bushings from a broken fuse link, and press into the newly printed replacement using a vice or similar to press the bushing in square to the link.