product manual Model: Successor 3977 Packing: 12 cards / middle box 18 middle boxes / outer box Pen tip: EF small tip + F large tip Ink delivery method: ink sac / pump (3.4 caliber) Style: a total of 2 Functional characteristics: colorful gradient fun soft glue Specifications: 1 EF large-point capsule changing pen + 1 F small-point capsule changing pen + 2 soft gels
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