The LAMY M21 Multisystem Ballpoint Pen Refill is for all LAMY Multisystem Pens. The Multisystem Pen was pioneered by LAMY in the 1970s, and their mechanism design is known as the best in the world. In comes in a pack of two, in black, blue, green or red ink. The refill is waterproof metal with a stainless steel tip.QUANTITY: Set of 2 x ballpoint pen refill in hangsell packaging TIP: Medium SUITS: Use with all LAMY multi-system/multi-function and multi-colour pens. SOURCE: Made in Germany