[Golf Ball Alignment Tool] – Line-M-Up Pro Dual helps you create accurate alignment lines on your golf ball for better putting and driving precision. [Improves Aim & Stroke] – Enhances your ability to aim correctly, read greens, and maintain a consistent putting stroke. [Dual Line Design] – Precision dual-line system allows for more visual feedback and alignment flexibility during setup. [Complete Set] – Includes 2 permanent marker pens and a ball marker – everything you need to mark and align your ball straight out of the box. [Compact & Easy to Use] – Simple clip-on design fits most standard golf balls and is perfect for use on the course or practice green.