Doubletree handles assembly with locks

Your handles appear similar to our 82-020, though it also looks like you have a key cylinder so see our 82-310. You could also reuse the same key cylinders if they are specially keyed and undamaged.

You might also need to replace the internal latch. Check it to see if that is worn and might need to be replaced. You can send us some photos of it for us to identify.