The flush-mount round LED courtesy light fits in a 1-1/8" diameter hole. The special lens design aims the light downward and the stainless-steel cover focuses the light preventing it from projecting upwards. Low amperage: draws 0.02 amps at 12V. Comes complete with attached stainless steel cover and gasket. Light diameter: 1-1/2". depth (top of cover to bottom of thread): 1-1/4". thread diameter: 1-1/8".