Lamp sockets vary widely in size, mounting hardware, lead length and construction material. The primary consideration when selecting a socket is a secure fit for the lamp end as an improper connection often creates short lamp life and overheating issues that can lead to electrical fires. Properly rated materials construction material especially for high wattage lamps is another crucial factor in socket applications where the misuse of an incorrect socket can lead to operational failure. Lead length and mounting configurations are also important criteria in identifying the best socket for a particular use but these features can often be adapted to accommodate a slightly different product. Please contact you Kelsun sales representative if you wish assistance with socket identification for your particular requirements.