BKFD 5-5-1/M18 BKFD 5-5-2.5/M18 BKFD 5-5-4/M18 BKFD 5-PCB BKFD 6-6-0.5 BKFD 6-6-0.5/M18 BKFD 6-6-1 BKFD 6-6-1/M18 BKFD 6-6-2 BKFD 6-PCB