M-301 Mechanical Pencil, 0.5 mm, HB (#2), Black Lead, Silver/Black Barrel, DozenShorter length fits inside shirt pockets.Convenient clip makes these instruments a fantastic grab and go option, attaching to your pocket, planner, collar or briefcase pocket.Refillable with Zebra Pen Standard HB Lead Refills and M-Pencil Eraser Refills.