pencil wholesale six angle rod red and black strip rubber pencil hb primary school children's writing drawing sketch practice pen for calligraphy

red and black pencil [1]] green rod hexagonal pencil [1]] yellow pole small eraser pencil [1 piece]] green rod hexagonal pencil plastic package [1 piece]] zhu hongda leather tip six angle rod [1 piece]] dark strip big leather tip six angle rod [1 piece]] black wood white penholder six angle rod [1 piece]] black wood anti-bite black stick six angle rod [1 piece]] black wood anti-bite black stick six angle rod boxed [1 piece]] black wood anti-bite small green rod boxed [1 piece]] log pencil (random shape of penholder) [1]] small green rod black wood anti-bite groove pencil boxed [1 piece]]

hydrogen bond 2b