The Original Stainless-Steel Retractable Ballpoint Pen. The F-301 Retractable Ballpoint is a perfectly portable steel pen with secure metal clip guarantees your pen will be there when you need it. Combining style, strength, and value this is America’s number one steel ballpoint pen for a reason.  Shorter barrel length fits well in a shirt pocket or work bag pocket. Available in a variety of point sizes, ink colors, and ink types that are all refillable.