Golf Ball Liner, Impact Ball Liner and Eyeline Golf Ball Marker, Golf Ball Alignment Marking Tool for Accurate Putting, Golf Ball Marker Tool for Practice or Competition Precision Alignment for Confident Putting: This golf ball liner helps you draw a straight, consistent line on your ball for accurate aim. The impact ball liner design allows you to trust your chosen line completely, so you can focus entirely on your putting speed. Universal Compatibility: This eyeline golf ball marker works with any standard golf ball and is incredibly easy to use. The golf ball marker tool simplifies your pre-putt routine, helping you align the ball with your target line. Improved Target Visualization: Using this golf ball line marker tool, mark your ball with the included stencil. The golf ball alignment marking tool creates a clear "T" mark that helps you square the club face to the ball for more consistent contact. Practice and Competition Ready: The alignment ball marker golf design makes it an essential tool for both practice sessions and tournament rounds, helping you build confidence on the green. Simple and Effective Design: No complex setup required with this golf ball liner. Simply place the stencil on your ball, draw your line, and align. The impact ball liner helps you hear that satisfying sound of the ball dropping into the hole.