Cyalume Refill For Model 20 & Model 10 LightStation, Yellow, 10"Industrial Grade SnapLights (Pack of 40) Refill pack of 40 SnapLight light sticks for use with the Cyalume LightStation Models 10 and 20 Light sticks measure 10" long and provide up to four hours of 360-degree illumination Includes 16 expiration labels, 24 tamper pins, and 12 tie outs for use with LightStation Models 10 and 20 Chemiluminescent substance is non-toxic and plastic body is phthalate free for safety Five-year shelf life from date of manufacture for a maintenance-free alternative to other lighting