Frixion Clicker pen combines the convenience of a retractable pen with the incredible, erasable FriXion gel ink! Great for marking patterns and lines. Write and erase repeatedly, no wear or tear. Pens are refillable. Features: Fine point 0.7mm. Writes Smooth, Erases Clean. Erase and rewrite repeatedly without damaging documents. No wear or tear! Eraser is at the top of the pen, TIP is retractable by pressing clip down Unique thermo-sensitive gel ink formula disappears with erasing friction.