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

and fast wet-area work — the right choice when speed and broad stroke width matter more than fine detail or precise line control

built to perform

lightweight marker sized for small whiteboards — chore charts

240 numbered pages give a long usable cycle before the volume needs replacing

pentel pocket brush pen refill cartridges 4 pack DUA which keeps lead from advancingFour 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)