Features APPROVED FOR USE ON THE COURSE: This string is approved for use in competitions. It is an essential tool for practice and competitive play, helping you improve your putting alignment on the course. BETTER ALIGNMENT: Start by marking your ball with the stencil and included marker. Read your putt, choose your line, and align the Ball Liner with your target line. When you look down, you'll see a "T" shape on the ball; use the flat perpendicular line to ensure flat-on-flat contact for precise alignment and a square putter face at impact. TRUST YOUR LINE & FOCUS ON SPEED: With the Ball Liner, your ball is perfectly aligned, allowing you to trust your chosen line completely and eliminate any second-guessing as you stand over the putt. This focus frees you up to concentrate solely on controlling the speed of your putt. UNIVERSAL COMPATIBILITY & EASY TO USE: Compatible with any golf ball, our Ball Liner is straightforward to use. Mark, align, and hit your putt with confidence. It simplifies your putting routine and enhances your accuracy on the green. PUTT WITH CONFIDENCE: With the Ball Liner, make confident strokes, delivering the putter face squarely to the back line. Notice: 1. Actual color may be slightly different from the image due to different lighting conditions. 2. Please allow 1–3 cm deviation due to manual measurement. Material: Plastic Package List: 1 Set Golf Ball Line