New in packaging, some minor damage to packaging and dust.

Diameter: 5-1/4"
Depth: 2-5/8"
Polycarbonate Body with Brass Terminals
Ignition Protected
For use with 6 to 50 Volt Marine Electrical Systems
Capacity - 250 AMPS Continuous, 360 AMPS 5 Mins. Intermittent
Terminal Stud Size: 5/16"
When used with Non-Unitized Alternators, these models will interrupt the field current (reducing the possibility of damage) if turned "OFF" with the engine running.