4'' Long by 3/8'' Wide (10 x 100mm) Bi-Color BLUE-YELLOW Light Stick. This great, new standard lightstick (5'' long - including the connector) is perfectly designed for inexpensive party give-a-ways 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 50 pieces per color per poly bag. Please order in increments of 1 poly bag (50 pieces). Other Bi-Color combinations also available.