Description This TWSBI stainless steel 1.1 Stub replacement nib was designed for the TWSBI Mini fountain pen, so that you can change different nibs to suit your mood. Just unscrew the section, push out the old nib unit and insert the new one. The TWSBI Mini and the Mini AL fountain pens are available in different colors and will accept these replacement nib units. Please make sure to choose the TWSBI Mini nib units for the correct fit. We offer Free Shipping on all orders over $59 for US customers, and for orders over $250 for our Canadian customers.