The Nanlite PavoTube 30C 4' RGBW LED Tube with Internal Battery 4 Light Kit, with a 1.9" diameter and a T12 form factor, is the ideal lighting choice small areas on a set or for shooting in vehicles such as cars, boats, or planes. The kit contains four PavoTube 30C 4' LED Lights complete with AC adapter mounting clips and a carrying bag. You can connect the lights together with the included sync cord.