Pack of 2 ink cartridges SPN-100A for all Platinum fountain pens including Preppy. Note on colour: Platinum's 'Blue-Black' is actually a fairly standard mid-blue colour - not the very dark blue more usually associated with this term - it is an iron gall based ink though so care should be taken when using in fountain pens without gold nibs. This does have the added bonus of making this ink permanent and the colour will change over time from blue to black. Dye ink Capacity - 1.2ml Quantity - 2pcs