A Razertip exclusive! Curved spear tips allow you to reach into areas otherwise unreachable. The point of the tip overhangs the pen barrel, allowing the hot point to contact the surface even in very tight areas. Sliding the foam grip back on the pen will extend your reach. Most people are amazed at how effective the #12 tips are at reaching into undercuts and other hardto-access places. Can also be used for general fine detail. The #12XS is the finest tip available, capable of extremely fine marks and dots.