Description The Lamy ST Tri pen features a matte black lacquer body and cap, accented by a matte black clip and nose cone. The twist-action mechanism extends the red or blue ballpoint refills, by lining up the center trim band color ring to the color you want. The pencil lead is extended by pressing the cap top push button. The Lamy ST tri pen uses the Lamy M21 mini ballpoint refill, and .5mm pencil lead. The Lamy Z15 eraser is located inside the push button on the top of the cap. We offer Free Shipping on all orders over $50 for US customers, and for orders over $250 for our Canadian customers.