22SS6WH Finish: Matte White Features: -Track Light.-Track attachment fitting: Molded polycarbonate; rotates into track.-Brass contact: Extends for connection to second circuit.-Horizontal pivot: Wireless stem profile with infinite horizontal rotation.-Socket: Bi-pin multipoint contact low voltage halogen socket.-Housing: Die cast aluminum.-Use only dimmers specifically designed for use with electronic transformers.-Low voltage fixtures may produce audible sound when dimmed. Includes: -Accessory cartridge: Hinged and captive; retaining ring included.-Glass shield: Included for use with unshielded lamps. Options: -Available in Metallic Aluminum, Matte Black or Matte white finishes. Specifications: -Transformer: Class two electronic transformer for 12V halogen lamps.-Vertical pivot: 0-90 vertical adjustment.-MR16 Lamp without Integral lens, 50W max.-MR16 Lamp with integral lens, 37W max. Dimensions: -Overall dimensions: 4.75" H x 2.75" W.