Either Coco Bolo or African Blackwood, parker refill
Coco Bolo, Cross thread-in refill
Purpleheart, Parker refill
I'm not Sure (I have a lot of "I'm not sure" stock), Cross thread in refill
Lacewood, Parker refill
Coco Bolo, Cross thread in.
The shorter pens are about 4 3/4 long and a little over half inch at the widest.