Tikky Mechanical Pencil Black 1.0 The professional tool in classic black and burgundy. Additional colour coding analogous to ISO 3098 displays the available line widths at a glance: 0.35/0.5/0.7/1.0. Create sketches, technical drawings and texts cleanly and precisely with the line width most suitable for the font. Hi-Polymer leads ensure high flexibility and durability while keeping the lead support tip clean.