Hayward SP0591HSL30 AstroLite all Underwater Halogen Pool and Spa Concrete Niche with 30-Feet 100-Watt 120-Volt Cord. Hayward's AstroLite all Series lights offer you all the quality, versatility and ease of use you would expect from Hayward, and does it all at a price that gives you the value you expect. AstroLite all Series lights feature machine-polished stainless steel face rims, a choice of halogen or incandescent lighting, and a wide range of voltages, wattages and cord lengths. Combined with Hayward's niches, they make an unparalleled value in lighting systems for all concrete or gunite spas, or for pools where a small diameter light is preferred.