Commonly Used T8 1x 18W/1x 58W Electronic Ballast Equipment for Fluorescent Lamp Light Weight Ballast Features: 100% brand new and high quality Optimization of the circuit matching design,optimize the perf ormance of the electrical design of the tube, high performance, long life. Energy saving system higher luminous efficiency and better. No stroboscopic, protect your eyesight. No noise,provide a more comfortable environment. Prevent fluorescent tube from flashing and buzzing when powered on. Specification: Material:ABS Size:Approx.21x3x2cm/8.27x1.18x0.79in Type:1x18W,1x58W Net Weight:100g Package Includes: 1x Electronic Ballast note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.