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.


Technical Specifications:

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Color:
Nib Size:
 Custom Handcrafted Pens
Overall Length when capped132 mm5 1/4"
Overall Length when un-capped147 mm5 3/4"
Girth of the grip section12 mmUnder 1/2"
Maximum Barrel Width17.5 mm0.67"
Overall Weight53 g1.9 oz
Nib TypeSteel NibSize 5