Peroride's winning recipe for fountain pen success! What do you get when you combine a well balanced classically styled pen offered in specialty nibs like the Postal, Waverley and FA PLUS the vast affordable range of vintage steel nibs from Esterbrook? A great buy-it-for-life package For this endeavor, you'll need a Pilot Custom Heritage 912 pen in the nib of your choicean Esterbrook MV Nib AdaptorSome Esterbrook nibsRecipe: Prepare your work area and steady the mind for relaxed hand control Unscrew the Pilot nib unit off Screw in the Esterbrook nib into the Esterbrook MV Nib Adaptor Attach the converter that comes with the adaptor kit And now for the tricky part.......steady...steady now.... Screw in the Esterbrook MV Nib Adaptor into Pilot Custom Heritage 912 barrel