To provide light into your boats, yachts, boat slips, and marinas, especially at night, so that you can see everything. This bulb light will last a long time and perform well. The BULB 97 (1-520097) has a heavy-duty covering for break resistance and durability. It is constructed with nickel-plated brass bases, which prevent corrosion while maintaining a positive point of contact. The filaments of this bulb light have a rough service design that permits hours of reliable light. Key Features: It has a heavy-duty covering for break resistance and durability It is constructed with nickel-plated brass bases Non-corrosive while maintaining a positive point-of-contact The filaments of this bulb light have a rough service design that permits hours of reliable light Specifications: Brand: Ancor SKU: 1-520097 UPC: 091887804140 Weight: 0.04 LBS Quantity per Packaging: 2 Figure Letter: P Design Amps: 0.69 Trade No.: 97 Design Watts: 9.3 Volts: 12 CP: 4 Life: 5000 Design Volts: 13.5 Heavy duty glass envelope for break resistance. Nickel-plated brass bases prevent corrosion while insuring a positive point-of-contact. Filaments, with "rough service" design, permit hours of reliable burning. Tested for dependability. Base Letter Details - E. Wedge Base F. Wedge Base G. Miniature Bayonet Base H. Miniature Bayonet Base I. Miniature Bayonet Base J. Miniature Bayonet Base K. Double Contact Bayonet Base L. Double Contact Bayonet Base M. Double Contact Bayonet Base O. Single Contact Bayonet Base P. Single Contact Bayonet Base Q. Single Contact Bayonet Base R. Single Contact Bayonet Base S. Double Contact Index BaseThis product replaces:639-520097, 91887804140, 9188780414, 97