HHIP 5 watt LED universal arm work light is 2-3/8 inch x 2-3/8 inch bolt-on mounting plate. Arm does not swivel. Overall height is 8". LED lights provide an excellent solution for heat sensitive environment. Light head diameter is 2-3/8". universal movement. 50, 000 hours LED lifetime. Flux is 350Lm. Color temperature is 6500 K. Power supply is 110V AC/1 phase.