Bulk 50 watt Par 20 Flood 120volt Halogen light bulb MOST POWER!
Satco Lighting S9490 Single 6.5 Watt Dimmable Mr16 Gu5.3 Led Bulb - Silver - Walmart.com
LUXRITE 50-Watt Halogen Equivalent MR16 Dimmable GU10 Base LED Light Bulbs Enclosed Fixture Rated 5000K Bright White (16-Pack) LR21503-16PK - The Home Depot
12 Pack Satco S3463 12-Volt 50 Watt Halogen MR16 Flood Bulb with 36 Degree Beam - No Lens - Amazon.com