2151. Features:. New isolated stud design uses standard 5/16" hardware and permits stacking of terminals. Compact, high-amp fuse-Appropriate for DC Main, inverter, windlass, and bow thruster circuit protection. Provides high current protection in tight space constraints. Weatherproof-suitable for small open-cockpit boats and other harsh environments. Insulating cap prevents accidental shorts. Use 5/16" or 3/8" ring terminal. WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.