full spiral energy saving lamp:20W, 26W; T4(12mm) tube, 110-230V, 2700K/4000K/6500K, 8000H high quality full spiral energy saving lamp:Power: 20W, 26Wtube diameter: T4(12mm ... , and the light distribution is very equalSaves up to 80% energy cost Packing:1pc/box, blisterOuter packing: Paper cartons, palletsWe have ... . We have CE&EMC, RoHS and ISO9001 certifications full spiral energy saving lamp