Price for the IRIS pen starts at $165 USD.
IRIS is a uni-body fountain pen which does not have a separate cap. The pen is operated by first opening the Iris at the top of the pen body and then twisting the end cap brings the nib out.
Much of its operation is explained here.
|Overall Length when capped||132 mm||5 1/4"|
|Overall Length when un-capped||147 mm||5 3/4"|
|Girth of the grip section||12 mm||Under 1/2"|
|Maximum Barrel Width||17.5 mm||0.67"|
|Overall Weight||53 g||1.9 oz|
|Nib Type||Size 5 nib units|