wholesale yongsheng all-steel art curved tip pen beginner student adult word practice with hard-tipped pen calligraphy art signature

all-steel single support black single

straight tip 0.38 [normal writing]] 0.7 fine curved tip [practice writing fine words]] 1.0 middle curved tip [sketch art signature]] 1.5 thick curved tip [coarse font correction]] 0.6mm [small warped head]]