A divot repair tool is an essential for every golfer's bag, and is used so often that many golfers carry one in their pocket while on the course. Divot tools can come in a very inexpensive plastic variety often given away by courses, while some golfers choose to have monogrammed metallic divot tools with customized ball markers.
A golf divot tool is used to repair a divot in the ground, though there are two different types of divot tools available. Learn to repair a divot correctly with advice from an experienced golf instructor in this free video on golf equipment.
It is necessary in golf to mark your ball once it is on the green in order to allow players further away to putt. If players did not mark their golf balls, then other players might hit the ball with their ball when they putt. Marking a golf ball on a green must be done properly and according to the rules of the game, or players can be subject to penalties.