0.3/0.5/0.7/0.9/1.3mm mechanical pencil lead hb resin mechanical pencil lead writing supplies

0.3mm (resin core is not easy to break)(0.3mm（树脂芯不易断）) 0.5 (resin core is not easy to break)(0.5mm（树脂芯不易断）) 0.7mm (resin core is not easy to break)(0.7mm（树脂芯不易断）) 0.9mm (resin core is not easy to break)(0.9mm（树脂芯不易断）) 1.3mm (resin core is not easy to break)(1.3mm（树脂芯不易断）) 2.0 (resin core is not easy to break)(2.0mm（树脂芯不易断）) 2.0 color pencil refill (9 pieces)(2.0彩色铅芯（9根）) 2.0 black pencil refill (9 pieces)(2.0黑色铅芯（9根）)

hb(HB)