For fine leads, the harder the lead, the less intense the black colour is. The blacker the lead, the softer it is. It is difficult to create a fine lead which is both black and hard. Pentel has succeeded in achieving both in its Hi-Polymer fine lead. This AIN Hi-Polymer fine lead is the third generation of fine leads by Pentel. It has impressive stability and intense black colour. The convenient transparent packaging is environmental-conscious as it is made with recycled materials. Depending on the stroke width, the boxes contain 20 to 40 fine leads.