Made from COE 96 glass, they can add an awesome look to any fused glass projects! Glass thickness: 3mm Crab measures 3" w x 2 3/8" tall. 3 pieces. Oceanside COE 96 Red/White Wispy and 2 black opaque polka dots, which may be fired or glued on. Due to the nature of wispy glass all crabs purchased will look different.