This light is chrome plated brass. It is not available in black. For a black spotlight you would need to go with our current model spotlight with black ABS housing.
The shaft length for a 1950 Ford Coupe would be "A". For the current model black spotlight part would be 330A-0002.
If this is a new installation, you will also need a mounting kit. For a closed you would need 27 installation kit for driver side or 27RH installation kit for passenger side.
For convertible you would need 29 installation kit for driver side or 29RH installation kit for passenger side.