Monorail - Complete Monorail Kit. Includes (1) 12V 150W Electronic Surface Mounted Transformer (MST-12012/150E-SN), (2) 4 Feet Rail (MA-R4-SN), (3) Fixture Adapter (MA-FA-SN), (1) I-Connector (MA-I-SN), (3) 3 Inch Rigid Standoff (MA-S03-SN), (3) Low Voltage Glass Spot (QAS122X3-SN), (3) Dome Glass Shade (QASA101), (3) MR16 12V 50W Lamp (MR16)