The Amsco Polaris surgical lights are available in a dual or single-head, track or center-mount configuration.  Each set of Polaris lights come with wall-mounted variable intensity control.  Sterilizable handles are optional.  DRE sells the Polaris O.R. lights refurbished.  Other specifications are: Foot Candles: 9,000 per head at 38" with 4" pattern
Lux: * / Kelvin: 4400° / Depth of Field: 29" / Focus Distance: * / Diameter of Light Pattern: 4", 6", 8" at 38".