This tip size is a great all-around size for outlining, writing, and filling in small to medium-sized areas. It is a popular choice among artists and crafters for its versatility and ability to create both fine and broad strokes. The PC1M is ideal for adding details and highlights to drawings, illustrations, and designs, as well as for creating crisp, clean lines and patterns. 0.7mm Extra Fine: PC-1MR Perfect for detailed line work and fine writing.