Triangle Bulbs T10145-10 (10 pack) - Q20MR11/FL, 20 Watt, MR11 Without Cover, 12 Volt, G4 Bi-pin Base, Halogen Flood Light Bulb, 10  Pack 20 watt MR11 Halogen flood light bulb Pack of 10 bulbs G4 bi-pin base (4 mm between pins)