4 Qty. Halco 120V 100W T4 E11 Prism ESN Q100CL/MC/120 100w 120v Halogen Clear Lamp Bulb 100 Watts - 120 Volts - 2950K Color Temperature Base - E11 Bulb Shape - T4 Average Life (Hours) - 2000 Length (In.) - 2.68 Diameter (In.) - 0.5