Golf Ball Marker Pen Waterproof Alignment Tool With Hook For Outdoor Sports. Elevate Your Golf Game with Our Swing Trainer Golf Ball Liner Marker Pen. Designed to Enhance Batting Accuracy, This Compact Tool is Perfect for Golfers on the Go. Easily Attachable to Your Keychain or Neck Rope, It's Both Portable and Convenient. Featuring Fast-drying, Waterproof, Oily Ink, It Ensures Long-lasting Markings. Crafted from High-quality, Wear-resistant Plastic, This Lightweight Marker is Durable and Easy to Carry, Making It an Essential Addition to Your Golfing Accessories. Features: - Improves Batting Accuracy: Aids in Precise Golf Ball Alignment. - Portable Design: Hang It on Keychains or Neck Ropes for Easy Access. - Durable and Long-lasting: Made from High-quality, Wear-resistant Plastic. - Vibrant Colors: Available in 11 Different Colors. - Compact and Lightweight: Weighs Only 6g with Dimensions of 90x12mm. Package Includes: 1 X Golf Ball Liner Marker Pen Note: Slight Variations in Color May Occur Due to Screen Brightness Settings. Please Account for Minor Measurement Deviations..