rOtring 1904291 Rapid PRO Ballpoint Technical Drawing Pen, Medium Point, Silver Chrome This long-lasting, smooth, and precise retractable ballpoint pen is the perfect professional tool for all sketching, writing and drawing applications. The full metal body has an ideal weight balance and a comfortable non-slip knurled metal grip. Leak-proof pen is pocket- and airplane-safe. Pen is refillable and includes a high- quality metal jumbo refill. The full metal body has an ideal weight balance and a comfortable non-slip knurled metal grip. Not for any use on skin, including tattoos.