Welcome to istockgolf, the best discount golf clubs online superstore which sells high-quality golf products including golf balls. A golf ball is a ball designed to be used in the game of golf. Under the Rules of Golf, a golf ball weighs no more than 1.62 oz (45.93 grams), has a diameter not less than 1.68 in (42.67 mm), and performs within specified velocity, distance, and symmetry limits.