built to perform

0 mm tungsten carbide tip

This set is the soft

which keeps lead from advancing accidentally while it's loose in a bag or pencil case

pentel pocket brush pen refill cartridges 4 pack DUA built to performFour replacement ink cartridges for the Pentel Pocket Brush Pen (GFKP GPP3 series). Push engagement seal swaps cleanly mid session with no leaks. Pigment based black ink waterproof and fade resistant once dry, so watercolor washes or alcohol markers can go over your lines without bleeding or reactivating. Contents: 4x black cartridges Ink: Pigment based, waterproof, UV fade resistant Fits: Pentel Pocket Brush Pen (GFKP GPP3)