Juki Large Capacity Bobbins for Dnu-1541 Du-141 Walking Foot Machines - 10 Pk Pack of 10 Large Capacity Metal Bobbins for Juki Industrial Sewing Machines. Bobbin size : 1" diameter X 3/8" thick (25.5mm X 10mm) For Juki Industrial Sewing Machines : DNU-1541, DNU-1541S, DNU-1541H, DNU-241, DNU-261, DSU-144N, DU-141, DU-1181, DU-580, LS-341, LS-1340, LS-1341, LS-1342 And more