HUT™ Products has Pen Tubes for all of our Traditional Type Pens and Pencils, Ameroclassic™ Double Twist Pens, Ameroclassic™ Rollerball and Fountain Pens, The Fat Pen, and EuroStyle™ Double Twist Pens. Solid Gold Plated Traditional Style Clips and Double Beaded Center Rings will add a touch of class to the Traditional Style Pens and Pencils in Upgrade 24k Gold. We also carry a variety of Special Interest Clips including a Cross, Tennis Racket, Baseball Bat, Golf Club, Football Helmet, Rifle, and Soccer Ball. We also have a Schmidt® Pencil Mechanisim to turn the Titan™ Ballpoint Pen and the Convertible Pen into a Pencil.