This package includes 2 pieces of golf ball alignment marking tools, made of durable lightweight ABS plastic that resists daily wear for long-term use. It is designed to help you draw clear straight alignment lines on your golf balls quickly, which lets you confirm your putting direction more accurately before each shot. You can easily clip it onto your golf bag and take it to driving ranges, golf courses and putting practice areas, suitable for both amateur golf beginners and experienced golf players to improve putting consistency and lower your scores during games.