The Microtech 401-SS-LG Siphon II Lime Green pen, features a 303 stainless steel frame and has a retractable tip that is activated by a lever. The pen holds a Pilot G2 Mini ink refill. The overall measurement of the pen is 5.5″ overall when open and 3.5″ when closed. Weighs 2.6 oz. Made In The USA.