1. Easy to draw lines to check the alignment of your swing or putt. 2. Help you make your own mark to identify your golf ball. 3. These markers can also help you find better angles and achieve your goals. 4. , easy to clip on belts, bags, pockets. 5. Preferably with a pen. Great tool for golf ball markers. (This product does not come with a pen) Product:360Rotating Golf Marker Weight:90g The 360rotation of this product can draw any 180-360 lines on the golf ball Notes:It doesn't come with a pen. Colour:Random Color(no designation is accepted) Material:plastic Size:7.5x6x4cm/2.95x2.36x1.57in Package Contents: 3 x Golf Ball Marker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.