20 Qty. Halco 20W JC 12V G4 Prism JC20 20w 12v Halogen Clear Lamp Bulb 20 Watts - 12 Volts - 2800K Color Temperature Base - G4 Bulb Shape - T3 Average Life (Hours) - 3000 Length (In.) - 1.18 Diameter (In.) - 0.31