Our 6'' long by 3/8'' wide (10 x 150mm) BLUE-YELLOW Bi Color glow stick is 7'' long - including the connector. This blue-yellow combination is perfectly designed for inexpensive party give-a-way and yet puts out a tremendous amount of light. The high end multi function connector is pre-attached to each light stick and is packed in bulk 25 pieces per color per poly bag. Please order in increments of 1 poly bag (25 pieces). Other Bi-Color combinations also available.