Microtech’s Siphon II 401-SS-SW25 is an above-average writing utensil. This special version features an engraved “25th Anniversary Edition” logo on the handle. It also features a unique lever-action system allows you to carry this pen snuggly without any worry of ink marks. Its stainless steel construction makes this pen indestructible. The pen is designed to hold Pilot G2 Mini ink refills. Made In The USA.