DF57AH-02S-1.2C DF57AH-2S-1.2C DF57AH-2S-1.2C(15) DF57AH-4S-1.2C DF57AH-4S-1.2C(15) DF57AH-5S-1.2C DF57AH-5S-1.2C(10) DF57AH-6S-1.2C DF57AH-6S-1.2C(10) DF57B-2P-2.4V(21)