Set 10 ruột bút bi bằng kim loại ngòi 0.5mm màu xanh dương/đen tiện lợi

Ink Color:Black ,Blue Material:Metal 424 Standard: International standard Condition:Brand New + High Quality ! Length: approx. 98 mm/3.86" Point: 0.5 mm Rough: about 6 mm/0.24" Packing List: 10 x Ballpoint Pen Refills Feature: These refills fit most of twist ballpoint pens Style and size can be generic, writing smooth, smooth Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-2mm measuring deviation due to manual measurement.