This is the hinge and handle kit for the Post-2015 Primo Round. Primo's hinge hardware is not the same on pre-2015 and post-2015 grills, and a kit from the wrong era will not fit yours, so settle which one you own before anything else.
The kit covers the hardware that holds the dome and moves it: the hinge, the bands that wrap the ceramic halves, and the handle. Those three work as one assembly on any kamado. The bands grip the ceramic, the hinge carries the weight of the dome and decides how it lands when you close it, and the handle takes the pull.
Worn hinge hardware announces itself. The dome sits crooked, fights you on the way up, or stops meeting the base evenly the whole way round. That last symptom matters more than it looks, because a dome that does not land square leaks air, and a leaking kamado is a hard thing to hold at a low temperature. Replacing hinge, bands and handle as a set keeps the parts matched to each other rather than pairing new hardware with bands that have already spread.
This kit belongs to the Round alone; the Oval sizes have their own, split by era in the same way. The grills it serves are the Primo Round ceramic charcoal grill and the Primo Round All-In-One package. If you are rebuilding the stand at the same time, the Primo cradle for the Round is worth a look, and the rest of the parts catalogue sits in Primo grill accessories.