These durable aluminum pens are refillable and offer archival, acid-free, pigment based ink, Tips can be replaced with standard SP nibs, Set contains , 03mm pens in 12 colors: Red, Yellow, Tuquoise, Orange, Wine, Cobalt, Sky Blue, Olive, Purple, Pink, Sepia, Gray, Contents subject to change, General Catalog: 141, SKU: ALV15085