Thank you for viewing. Purchased new from Alice Books. Used only 1-2 times. ProPen3/ProPen2 Compatible Ceramic Hybrid Nib Detailed Information: This nib is made by integrally molding silicon nitride Si3N4 ceramic, which is said to be "as hard as diamond," with a resin shaft. You won't have to worry about the tip wearing down. The light ceramic feel is surprisingly natural. There is no kickback upon contact with the tablet surface, and you won't get tired even after long hours of use. The smooth drawing feel is suitable for everyone and is very easy to use. Compatible models: ProPen3, ProPen2, ProPenslim, ProPen3D