only for art waterproof needle pen hand-painted needle pen hook line drawing edge sketch pen student hand drawn hook line pen 美术专用防水针管笔手绘针管笔 勾线描边草图笔 学生手绘勾线笔

9 mixed brush 0.05 zero point one 0.2 zero point three zero point four zero point five zero point six 0.8

black