Pineider Full Metal Jacket Rollerball Pen Pineider Full Metal Jacket Rollerball Pen, Ash Grey The newly released Pineider Full Metal Jacket line uses a metallic variant of their patented UR material. The Full Metal Jacket series offers a spring-loaded marine steel clip in the shape of a quill and the band includes the Pineider logo. This rollerball pen takes a "Schmidt 888" refill which allows the user to choose from many different colors and point sizes. We an authorized Pineider dealer so your pen is fully warrantied.