Bic all in one is a convenient disposable fountain pen that doesnt require any messing around with ink cartridges it is medium nib disposable fountain pen that allows you to get writing straight away without having to worry about an ink cartridge the stainless steel nib allows for neat writing at home at school or in the office the body of the pen is partially transparent so you can easily see how much ink you have left available in black blue or red ink in boxes of 12