We offer a proprietary pen featuring a solid carbon fiber tube over a stainless core tube. Carbon fiber is rarely used in pens due to its high cost and manufacturing complexity. Made with 100% genuine stainless steel. Features of this Carbon Fiber and Steel Slim Bolt Action Pen ITEM WEIGHT - 2.3 ounces PRODUCT LENGTH - 5.25 inches CLOSURE - Retractable Bolt Action MATERIAL TYPE - Stainless Steel NUMBER OF ITEMS - 1 POINT TYPE - Fine INK COLOR - Black Comes in a sophisticated box, ideal for professionals, students, and anyone who values premium writing instruments.