Go Game Set: The Go Bento Box Quality glass Go stones with plastic containers Portable, compact and convenient Easy to carry in one hand and easy to store 160 black stones and 160 white stones (nearly all games of Go require less than 300 stones) Stone diameter: 0.8". Stone thickness: 0.28" (2.1 x 0.7 cm). Weight of set: 4 lb (1.8 kg).