Rotary hook for Industrial sewing machine . Max sewing speed:4500r.p.mAperture:Φ7.94mmSuitable for: JUKI:DDL-127,227,541,542,543,545,555 etc. JANOME:DB-J701-4,J707-8 BROTHER:DB2-B714-3,B753,B736 etc. SINGER:281-81,83,366,391U etc. CHINA:GC15-1,28-3,6-1,28,40-1 etc. OUR SHOW ROOM:OUR OFFICE :OUR PACKING: Good quality Rotating hook for Industrial sewing machine spare parts