Ball Line Marker Pen — compact alignment tool for reliably marking golf balls Key benefits Improves alignment and consistency: the fine tip draws clear reference lines on golf balls to support repeatable setup and better shot control. Weatherproof marking: oily, fastdrying ink produces waterproof, faderesistant lines that remain clear in different weather conditions. Ready to carry: small, lightweight design with a hang hook fits a keychain or neck rope for quick access on the course or in transit. Features and specs Function: ball line marker pen designed for accurate line drawing on golf balls to aid alignment. Ink: oily, fastdrying, waterproof formula that resists fading. Tip: precise tip for controlled, consistent lines. Size & weight: 90 x 12 mm, 6 g — compact plastic body that fits in any bag pocket without adding bulk. Portability: builtin hang hook for attaching to a keychain or neck rope. Practical use scenarios Oncourse preshot routine: draw a quick alignment line before each putt or short chip to confirm aim and ball orientation. Practice sessions: mark repetition lines during drills to track consistency and reinforce muscle memory. Travel and convenience: clip to a keychain or wear on a neck rope for immediate access during rounds or while moving between courses. What this product solves Eliminates guesswork when aligning the ball by providing a clear, durable reference line. Maintains visibility in wet or humid conditions with waterproof, faderesistant ink. Keeps a marking tool handy without adding bulk to your bag or gear. Material and compatibility Body: lightweight plastic. Intended use: drawing alignment lines on golf balls; compact and portable for course and practice use.