These "M" Large Style BOBBINS #18034 are 1" in diameter and 3/8" thick.
These Bobbins will fit many Large Bobbin Machines including:
Tin Lizzie 18 regular and TinLizzie 18 LS Models
Brother: B1 BOX MACHINE, B745, B746, B747, B791, B792, B797, B798
Consew: 120, 145R, 146RB, 175RB, 199RB, 205RB, 206RB
Feiyue: FY5318
Gammill: QUILTERS
Nolting's: QUILTMASTERS
Juki: DDL-201, DDL-201S, DDL-201H, DDL-560, DNU-241, DNU-1541, LZH-1290
Mitsubishi: CU-865-22, DB-130E22, DB-189-22, DB-199-22, DX-370-20, DX-870, DY-330, DY-337, DY-339, DY-340, DY-349, DY-350, DY-359-22, LT2-180BIT, PB-330, PLK-1210, PLK-1410, PLK-1710, PLK-2520, PV-1000, YU-360-22
Nakajima 280L
Singer: 121C, 121D, 369W, 531B
Yamata: FY5318