We really don't need to sing the praises of these pens* - a class retractable gel pen is an absolute essential! This set of 5 writes smoothly in blue ink, has a handy shirt clip so you can attach it to your notebook and had a retractable nib so you don't need to worry about losing a lid! *Sorry, we can't help ourselves - we just really like stationery. The Nitty Gritty Each pen measures approx. 145 mm in length.