Monteverde Capless Gel to fit Sheaffer Ballpoint Pens - Blue Ink Standard size Sheaffer ballpoint refill by Monteverde Convert your ballpoint pen into a Capless Rollerball High quality metal parts with Stainless steel tip and Medium Point & Gel Ink Length: 3.78 inch (96mm) Nib Size: Medium (0.7mm) Refill Reads: Monteverde USA Capless Gel - S42