C4-K1.8R-270 C4-K1.8R-270M C4-K1.8R-2R2 C4-K1.8R-2R2N C4-K1.8R-2R7 C4-K1.8R-2R7N C4-K1.8R-330 C4-K1.8R-330M C4-K1.8R-390 C4-K1.8R-390M