LOGISYS Computer CLK12BL 12 Cold Cathode kit Specifications: Easy installation Dual inverter Compatible with Sound control module Color: BLUE Tube diameter: 3.0 mm Tube length: 12 Inches Input voltage of inverter: 12 V Brightness: 28000 - 30000 cd/m2 Average Lifespan: 30000 hours Parts: 90 days limited Labor: 90 days limited