These are high quality anodized black metal cased 24VDC colored LED Lights. They are medium intensity so they are just right.
The LED indicator mounts in a 9mm or 23/64″ (0.359″) hole.
Approximately 2″ in depth with solder terminals.
Lamp draws 0.015 amps (15ma) at 24volts DC.
Note: This LED is not polarized which means either tab can be the positive connection.