Pilot Mechanical Pencil Eraser Refill - 5 pieces (HERFN-10) PILOT Mechanical Pencil Eraser Refill (HERFN-10), for Color Eno(HCR-12R), Super Grip(HGP-10), PATINT(HPA-10R), REXGRIP(HRG-10R), Air Blan(HA-20R3), SPARK(HFSP-30R), Opt.(HOP-20R), FUREFURE SPRINTER(HFST20R), FUREFURE CORONE(HFC-20R), DEL FUL(HDF-50R) Size: Diameter 4.8mm. Length 13.8mm Eraser Color: White 5 pcs per Pack