brand refills are an economical alternative to higher priced refills. for Cross Black #8513, Blue #8511, or Red #8515 Remove your refill and compare it to the pictures and fit guide here. If your refill appears to have the same shape, measure it to make sure it is 4.563 inches / 116 mm long and has a shaft with a diameter of .12 inches / 3 mm. If your refill matches pictures and dimensions, order with confidence. This refill is also compatible with pens and refills from numerous manufacturers, including Fisher, Monteverde, Regal, Schneider, Sheaffer, and Ystudio. Just make sure the dimensions and pictures match before ordering. For more details view our video on YouTube by searching "Ballpoint Pen Refill for Cross." We use smooth writing ink from Germany and and a Medium 1 mm ballpoint tip for smooth writing and fine lines. Refill has a plastic top with threads and screws into place. Refills are packaged in a reusable zip close bag. refills are not manufactured, licensed or endorsed by the pen manufacturers referred to on this page. The trademarks of the pen manufacturers are identified only for the purpose of providing refill compatibility information. Check out these other items from Cottage Mills/: BagTag CardPen PixCase PixMug PixPen PixStylus ShowOff Pen ZipSign Stay-In-Place Mats DotBox Small Item Storage Sewing & Quilting Notions - Ballpoint Pen Refill for Cross Black #8513, Blue #8511, or Red #8515 QUALITY - Free-flowing, long-lasting, smooth writing ink with 1 mm Medium ballpoint tip. Original manufacturer quality with metal shaft. Packaged in reusable zippered bag. IMPORTANT - Before ordering, remove your refill, measure its length and diameter, and compare to pictures here. Refills are 4.563 inches / 116 mm long, and the diameter of the metal shaft is .12 in / 3 mm. Refill has plastic top with threads and screws into place. If your refill matches pictures and dimensions order with confidence. Search “Ballpoint Pen Refill for Cross” on YouTube for video with more details. SATISFACTION GUARANTEED - If you are not satisfied with our refills, just let us know and we will make it right. SUPER VALUE - Why pay $5 to $10 and get just 1 refill?