Precision Alignment: This ball marker pen helps improve accuracy by drawing clear alignment lines on your ball, aiding 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 scenario: On green alignment during practice or rounds, draw a line on the ball to guide your target and improve putt consistency. Use scenario: Between shots during rounds, keep the marker on your bag or with you via the hang hook for quick access. Use scenario: During training drills, mark multiple balls to track progress and compare alignment changes over time.