Description Please Note: The Raven Push Piston was in extremely limited supply and has sold out. Additional Estie Ravens will not be available until 2024. Please supply your email above and you will be notified when the Raven Push Piston is back-in-stock. The very limited first run Esterbrook Estie Raven fountain pen is made of black acrylic acrylic resin that has been sand-blasted to give it a matte finish with a black-plated Palladium clip. The clip has been specially engineered to easily slide in or out of a shirt pocket without assistance while still maintaining a firm grip. The Esterbrook Estie Raven features a black-plated #6 JoWo nib that can be swapped with other JoWo nibs including the Anderson Pens #6 nibs! The Estie features a nib unit that can be removed easily so that cleaning is even quicker. The newly created filler is a little difficult to describe. Esterbrook calls it a button piston, a piston filler, and a push piston. It functions much like a Pilot Con-70 converter. To fill, unscrew and remove the blind cap at the end of the barrel, and push the button filler several times with a short pause in between each stroke. The ink will then fill inside the inner tube. This pen will ONLY fill from the bottle and will NOT accept cartridges or a converter. The Esterbrook Estie also includes a "Cushion Cap" closure system featuring a spring-loaded inner cap. This not only gives the cap a satisfyingly secure closure, but also prevents the nib from drying between uses!