Zebra Delguard 05 Honeycomb Blue N2 PMA85N2HBL 4901681886487 (10 sets)

Core diameter: 0.5mm Maximum shaft diameter 10.3 x total length 137.3mm 10.0g Protects the core. I can write forever. The Delguard System is a mechanical pencil that protects the lead from all directions and prevents the lead from breaking. (It may break if you knock it more than 4 times.) ◆Delguard System ◆Packed Shaft: Resin