Made with tempered borosilicate glass. This bong is 12" tall, with a 19mm joint, 50mm mouth, & is 7mm thick. Includes a 19/14 downstem and a 14mm UFO bowl. Made with tempered borosilicate glass. This bong is 12" tall, with a 19mm joint, 50mm mouth, & is 7mm thick. Includes a 19/14 downstem and a 14mm UFO bowl.