BK-AGC-1-6/10 BK-AGC-1-8-10-R BKAGC2 BKAGC20 BK-AGC-20 BK-AGC-20-R BK-AGC-2-1/2 BK-AGC-2-1-4 BK-AGC-2-1-4-R BKAGC25