Sailor Pro Gear Mini fountain pens are the perfect pen for the writer on the go. From small bags to shirt pockets, they fit anywhere. With the threaded tail, the cap screws on securely to make it a full-size pen when writing. Our preowned pen looks almost like new. Minimal wear, if any. You will write an extra-fine line with its 14k gold H-F nib. It is a very firm nib that has feedback, if you write with any pressure. BUT, it is smooth if you don't use any pressure at all. So extra fine, it is more like an accountant's nib. We think it is Sailor proprietary cartridges only. We include a few spares that are older and slightly dried out. 10.5cm capped.