Pineider's Pen Filler is a portable inkwell for filling fountain pens while on-the-go. Quick and efficient, it is compatible with most types of filling mechanisms and most pens. Instructions are included for the leak-proof, 4-step process: insert pen nib, lock the pen in place by turning the top of the filler, flip upside down, fill pen!
It includes an eyedropper for ease of filling from another bottle. Max ink capacity is 10ml. Works with pens with grips that have a diameter between .37" and .53", meaning you can use all but the thinnest or thickest pens.
Measures 3.86" x .83.