The Professional Golf Ball Liner Markers Pen Accurate Ball Marking: The Professional Golf Ball Liner Markers Pen is designed to enhance ball marking accuracy by providing clear and precise alignment marks on golf balls. Convenient Hanging Design: It has a hang hook and can be easily attached to a keychain or neck rope. Its compact size and portability make it easy to carry during golf games. FastDrying and Waterproof: The oily ink dries quickly on golf balls, so the alignment marks remain visible even in damp conditions. It is waterproof and faderesistant. Durable Construction: Made from quality plastic, this ball liner marker pen is resistant to wear and tear, offering longlasting durability on the golf course. Use Scenarios: On the course or practice range to apply precise alignment marks before or during play for consistent aiming. During crowded rounds or practice sessions to quickly remark or differentiate balls using the visible marks. While traveling or between rounds, attach to a keychain or neck rope for ready access.