Glass Marbles Bulk, Set of 40, (36 Players and 4 Shooters) Assorted Colors, with Game Marbles Rules. TOP LINE QUALITY GLASS MARBLES: All marbles are constructed upon the highest quality standards. Therefore, they are made to be top-notch and exceed your highest expectations! FOR SUPER FUN GAMES like the Marble Run or the Traditional Marble Game that boost your child's hand-eye coordination and develop useful fine motor skills! INCREDIBLY VERSATILE TOY: children have been playing with marbles for thousands of years - they are a toy that will never fall out of fashion! ASSORTED GAME MARBLES: Get the most beautifully made, colorful marbles in existence - playing with marbles is a cheap and cheerful activity that will keep your little ones entertained for hours! Size is approximately 5/8" Players and 1" Shooters