10 Qty. Halco 13W T2 Spiral 4100K E12 ProLume CFL13/41/T2/E12 13w 120v CFL Cool White Lamp Bulb 13 Watts - 4100K Color Temperature Lamp Base - E12 (Candelabra) Bulb Shape - T2 Spiral Average Life (Hours) - 1,000 Length (in.) : 4.19 - Width (In.) : 1.81