Product model: HAM-P1614/P1861 Pen body length: 148mm Quantity of lead cores: 20 pieces/box Packaging size: 174 * 60 * 21mm Rubber size: 54 * 21 * 1mm Lead core specification: HB/0.5mm or HB/0.7mm Packaging specification: pen * 1 piece+lead core * 1 box+rubber * 1 piece