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Norman Lamps LED-MR16-4W Green Color - 12 Volts, 4 watts, LED MR16, GX5.3 (2-pin) Base - - Amazon.com
Amazon.com: EFP T5 Wedge Base 12 Volt, 4 Watt Low Voltage Replacement Bulb | Energy Efficient, High Brightness, and Long Lasting Bulbs for Home and Office Use - Includes 20 Bulbs : Everything Else
T5 Landscape Light Bulbs 12 Volt 4 Watt Landscape Bulbs Low Voltage Landscape Lighting Bulbs Base Light Bulb for Replacement Outdoor Garden Deck Yard Landscape Lamp (10 Pieces) - - Amazon.com