Jacques Herbin Glass Pen 17 cm. This 16 cm long glass pen is a traditional writing instrument that is quick and easy to use. It is handcrafted. Thanks to the small grooves on the nib, multiple lines can be written without the need for re-dipping. Each glass pen comes in an elegant gray gift box with hot foil stamping. The perfect gift for lovers of beautiful letters. The glass pen is best used with fountain pen ink.