PM - Counter Pen, Square Adhesive Base/Chain, BK Barrel/BK Ink, Sold as 1 Each, PMC 05057 Go to amazon.com Related posts Top 10 best attached pen 2022 FeatureRefillable, antimicrobial ballpoint counter pen features a smooth grip.Strong, 24" ball chain.Refill pen allows for an extra-long life. DescriptionStrong, 24'' ball chain keeps your pen securely attached to the base. Refill pen allows for an extra-long life.