Precision Alignment: This ball marker pen helps improve accuracy by drawing clear alignment lines on your ball for better aim and consistency on the green. Complete Accessory: Features a convenient hang hook for attaching to keychains or neck ropes, making it compact, portable, and always accessible during rounds. Long Lasting Ink Performance: Uses quickdrying oily ink that is waterproof and fadeless, providing visible marks that withstand various weather conditions and repeated use. Construction: Made from wearresistant plastic materials, this lightweight marker (6 g) measures 90*12 mm and is built to last through countless games. Use scenarios On the putting green, draw precise alignment lines on your ball to guide your putt and improve consistency. At the practice range or on the course, quickly mark your ball with a visible ink mark that stays clear in sun or rain, helping you identify your ball and alignment. Clip or attach to your bag, keychain, or neck rope so the marker is always within reach during rounds.