Never used just removed from packaging and has been sitting around. Is dirty

ParkPower By Marinco RV 30 Amp Right Angle Locking Cordset. Grip Lock handle design for easy hook-up and correct blade alignment with inlet, even in darkness. Super flexible 10/3 cable. Watertight molded plug and connector ends. High quality construction. Includes threaded ring and Easy Lock ring. 30 Feet long.