No-slip finger grip provides the ultimate in writing comfort. Retractable pencil prevents lead breakage and keeps the tip safe. Easy refilling process reduces downtime and gets you back to writing. This Pencil has a Mechanical Mechanism. The companion pencil to the popular F-301 ballpoint, the Zebra M-301 Deluxe pencil is a bargain-priced stainless-steel pencil. Knurled plastic grip and Metal Clip. This Pencil takes 0.7mm Leads.