This is a line marker for golf balls. Attach the desired character stencil to the base, set the ball, and mark. Made of plastic, it is lightweight and durable. It allows for various marks such as alphabets and symbols♪ Golf balls are not included. You can draw various straight lines on the ball, allowing you to align the ball straight to your target for both putting and tee shots. You'll feel more confident with your lines, allowing you to focus on your stroke and hit straight towards your target, which is sure to improve your score ᕦ(ò_óˇ)ᕤ I also have many other golf goods for sale. If you leave a comment, I can offer a discount and list them as a set, so please take a look (^_^*) 〓Product List〓 #kuu-shop Golf golf putter putting 1-putt stroke competition