The Hubbell 26CM11 Marine Twist-Lock Plug is a yellow, locking plug made of nylon with screw terminals. It has a NEMA plug configuration of L5-30P and is polarized. The plug is resistant to corrosion, chemicals, and impacts, and has a face diameter of 1.97 inches. It is rated for a current of 30 amps and a voltage of 125V AC, and is suitable for use in marine applications. The plug is made in the US and has a grade of Marine.