Da Pen can be used as a writing equipment or as a self defense equipment. You can write with it, draw with it, stab people with it, or poke an eye out with it. Any ways you use it, it guarantees to give you beautiful results. Da Pen is light and easy to handle. You can take it anywhere you want. You can put it in a bag, a shirt pocket or a pants pocket without anyone notices it. Best of all it can pass any metal detective easily. Da Pen comes in 3 colors of ink to choose from: red, black, or blue. You can find Da Pen at any convenient stores and supermarkets near you. It costs only 10 bahts a piece. ...and...it's a good thing!...