The Jack Russell Terrier Roller Pen "Best Friends" by world famous Artist Ruth Maystead. It is a unique and charming design featuring the ever playful Jack Russell Terrier. Made of plastic this roller pen measures 5.25" long 13 mm diameter and weighs 0.4 oz. It is black ink, medium point and a gold tone cap with shirt clip. This is a delightful gift for those who love Jack Russell Terriers and the artist's touch adds a special element to this functional and stylish writing instrument, making it a special gift for any dog lover and collectors alike.