Pack of 20 aluminum bobbins for industrial single needles sewing machines. The bobbin #272152 The Metric measurements for this bobbin is 21MM Wide and 8.5MM Thick Aluminum bobbins are considered the Top-End "Luxury Bobbins". They offer less resistance which translates to less drag to the bobbin thread tension. Pack of 20 aluminum bobbins for industrial single needles sewing machines. The bobbin #272152. The Metric measurements for this bobbin is 21MM Wide and 8.5MM Thick. Industrial Single Needle Machines including : Adler : 196, 199, 289, 296, 381, 396, 419, 489 Brother : B705, B715, B735, B737, B757, B760, B767, B781, B791, B792, B795, DD7000 Consew : 100, 101, 210, 218, 219, 220, 230R, 290R, 219R, 292, 310, 2230R, 7360R-1, 7360RH Feiyue : FY-8500, FY-8700 Fomax : KDD-5570-7, KDD-5570H-7 Juki : DDL all class (except DDL-201), DLD-432, DLM-522, DLM-5200, DLM-5400, DLN-412, DLN-415, DLN-5410, DLU-450 Mitsubishi : DB-189, DB-199, DG-519, LS2-130, LS2-150, LS2-180, LS2-190, LS2-1130, LS2-1180, LX2-630 Singer : 95, 96, 120U, 121C, 121D, 220U12, 241, 251, 281, 366K, 400W, 402W, 491D, 491U, 591C, 591D, 591U, 600W, 660A, 770D, 771D, 1591, 2491D SunStar : KM-235A, KM-235B Typical : GC6-1-D3 Union Special : 61200, 61300, 61400, 61900, 63400, 36900 Yamata : FY-8500, FY8700