... -7.94BDia.: 7.94 mmSUIT FOR: CHINA:GC15-1,28-3,6-1,28,40-1 JUKI:DDL-127,227,541,542,543 ... ,545,555 JANOME:DB-J701-4,J707-8 BROTHER:DB2-B714-3 ... , Nano no oil coating and so on ,our capacity is 3 million pcs hook/year and 5 million pcs bobbin case ...