Triangle Bulbs T10001-25 (25 pack) - 5 Watt, T3 JC Type, 12 Volt, Clear, G4 Bi-pin Base, Halogen Light Bulb, 25 PACK Pack of 25 Bulbs 5-watt Bi-Pin Replacement Light Bulb Base - G4 Bi-Pin (2 pins) 12 Volt Halogen light Bulbs Length (moll) - 1.17"