C4-K1.8RA-2R7 C4-K1.8RA-2R7N C4-K1.8RA-330 C4-K1.8RA-330M C4-K1.8RA-390 C4-K1.8RA-390M C4-K1.8RA3R3 C4-K1.8RA-3R3 C4-K1.8RA-3R3N C4-K1.8RA-3R9