Pentel Refill 2-piece Set AS for PG1019/519, Pentel Packaged Ain Stein Lead, 0.9mm, HB for PG1019/519, Tube of 36pcs (XC279-HB) + Pentel Eraser Refill for Graph Gear 1000/500 (Z2-1N) Pack of 4, 1 Each Refill two piece set which Pentel recommends includes: Refill Lead, 1 tube (36 leads per tube) XC255HB 0.5mm lead, Refill Eraser, 1 tube (Pack of 4) Z2-1N erasers. All products are Made in Japan.