Diecast mini head combines with a smaller transformer to provide maximum halogen lighting where a small source is desired. Aiming devices add a fashion touch to a functional feature. Swivel design allows maximum aiming flexibility combined with shallow depth. No exposed wiring. Black finish. 3 1/2 L x 1 1/4 Dia x 4 1/4 Max Ext. Uses 50-watt max MR16 or MR11bulb and H track. For measurements and specifications, click the Product Specifications link. WAC Lighting - HHT-816BK
I got this Diecast Low Voltage Track Head H816 - Black from store Bellacor.