Simply trace the brilliant stripe with the lasers to see and feel an on-plane and on-path swingThe down pointing laser shows the path of the club. The up-pointing laser shows the plane of the club from waist high to top of swing in backswing, and in follow throughUse the deep practice principle of very slow motion, highly visible instant feedback to learn at the fastest rate possibleSee your swing's motion, make corrections, and hit longer, straighter, more consistent golf shotsNot intended for use when hitting balls - the laser will move too fast for you to see Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin