8100AL Finish: Metallic Aluminum Features: -Track Light.-Track attachment fitting: Molded polycarbonate, rotates into track.-Push tab: Molded polycarbonate, locks and detaches unit.-Track adaptor Housing: Die-cast aluminum.-Movable contact: Solid brass, extends for connection to 2nd circuit in advent track.-Ballast housing: Extruded aluminum housing with die-cast aluminum end caps.-Ballast: High Power Factor metal halide electronic ballast.-Lamp housing: Die-cast aluminum with cool-grip insulation band; a high temperature silicone rubber which allows aiming adjustments while fixture is on.-Cowl: Painted steel; steel springs hold lamp front and accessories; secured to housing with springs. Options: -Available in Metallic Aluminum, Matte Black or Matte white finishes. Specifications: -Thermally protected, 0.20A maximum input current, 24.5W input power.-Tension pivot mounts: Allows for 350 horizontal and 180 vertical rotation with tensioned mounts for controlled aim.-lamp holder: Twist and lock base, 5KV (600V) pulse rated heat resistant thermo plastic body socket with nickel-plated contacts.-18 AWG silicone leads with fiberglass outer sleeve.-Accommodates: 1 x 20W MR16 CMH (M156) GX10 base (bulb not included). Dimensions: -Overall dimensions: 4.5" H x 2.88" W x 4.5" D.