Casted, with built-in boss head Approximately 3.75" tall, 4.5" wide and 2.75" long Approximately 3.75" tall, 4.5" wide and 2.75" long Approximately 3.75" tall, 4.5" wide and 2.75" long Basic essential for classroom and home laboratories Casted, with built-in boss head. Secures up to two burettes. Approximately 3.75" tall, 9" wide and 2.75" long. Fits burette up to 25mm.