chenguang pen ink sac black heat-sensitive erasable 3.4 caliber student writing practice blue replaceable heat erasable ink sac

+ specific rubber label 3.4 universal caliber label high quality ink + pen kit + specific rubber calligraphy practice set

[crystal blue, 3 boxes, 30 pieces, teacher recommend]] [crystal blue, 4 boxes, 40 pieces, first choice for calligraphy practice]] [crystal blue, 2 boxes, 20 pieces, thermal erasable]] [crystal blue, 1 box, 10 pieces, thermal erasable]] [black **3 boxes** 30 pcs **teacher recommend]] [black label 4 boxes label 40 pieces label first choice for calligraphy practice]] [black label 2 boxes label 20 pieces label heat-sensitive erasable]] [black label 1 box label 10 pieces label heat-sensitive erasable]] [ink blue, 3 boxes, 30 pieces, teacher recommend]] [ink blue, 4 boxes, 40 pieces, first choice for calligraphy practice]] [ink blue, 2 boxes, 20 pieces, thermal erasable]] [ink blue label 1 box label 10 pieces label heat-sensitive erasable]] [special rubber eraser 1 rubber four colors random]]