This Airedale Terrier Dog Breed Roller Pen "Best Friends" by world famous Artist Ruth Maystead is a unique detailed pen featuring intricate Airedale Terrier dog breed design. It measures 5.25" long 13 mm diameter and weighs 0.4 oz. It has black ink, medium point and has a gold tone cap with shirt clip. This collectible roller pen is perfect for fans of the Airedale Terrier breed and is a charming practical way to show off your love for these loyal and affectionate dogs.