ILS ILH-OO01-WMWH-SC211-WIR200., OSLON Square 1+ PowerStar Circular LED Array, 1 White LED (3000K). Typical Luminous Flux: 210 lm. Outer Diameter: 20mm. Fixing Hole Diameter: 2mm. Constant Voltage or Constant Current: Constant Current., Intelligent LED Solutions