WHITE basic LED track light H-style for PAR20, 30, 38
Hampton Bay 1-Light White Medium Based Universal Bulb Linear Track Lighting Head 804649 - The Home Depot
Universal Track light - Future Designs %
Jezebel Gallery - Product Details
LED Track Lighting Kits & LED PAR30 Track Lighting Systems HT-50047 Universal Track Head Spot Lights | Direct-Lighting.com (888)628-8166
KING SHA 2 Pack Universal Line Voltage Track Lighting Heads Compatible H Type 3-Wire Single Circuit Track Systems,E26 Base,White,ETL Listed - Amazon.com
Progress Lighting Alpha Trak Collection Flat Back Universal Track Head in the Track Lighting Heads department at Lowes.com