Features: 1Main Purpose: Golf liners can easily and accurately add alignment and identification marks. Help align your shots or determine if your putter rolls in a straight line, and add unique identification symbols. 2Portable Design: The ultra thin design is convenient to store in the golf bag, easy to carry, will not increase burden, can bring you more convenience. 3Multiple Choices: 3 different golf ball line liners, 2 different color line drawing pens, various combinations, so that you can easily add line to golf ball. 4Slotted Alignment Kit: The slotted alignment kit is ideal for marking parallel lines on golf balls and turning any ball into a triple track ball. 5Convenient to Use: It's very easy and convenient to mark golf balls at any position, whether you're on the practice green or directly on the local route. Package included: 1 x Golf Line Drawing Device 2 x Marker Pens (Red, Blue)