The Windsor is a large light pen. Positive screw cap, posting cap. Dayacom version, Available in two premium finishes. Rhodium and Gold Titanium. Also in two writing models, Roller ball and Fountain pen. This pen can be modified into many differnt custom styles, closed end, closed end cap, hidden clip, minimal front coupler. The Windsor comes in roller ball or steel medium point German nib for foutain pen. This kit uses a " B " pen mandrel. Special modifacations have been made to our Windsor pen kits. All of them have a metal brass threaded coupler for the front section and a metal brass front section as well "NOT PLASTIC" Windsor parts are interchangable with Churchill kits.