These "M" Style BOBBINS #18034 are approximately 1" (25.4mm) in diameter and 3/8" (9.5mm) thick.
***PLEASE NOTE THAT THESE BOBBINS ARE SLOTTED. AS SUCH, THEY WILL FIT IN VIRTUALLY ALL OF THE QUILTING MACHINE BOBBIN WINDERS (including both on the machine and stand-alone).***
***THEY ALSO FIT IN VIRTUALLY ALL THE QUILTING MACHINES, INCLUDING THE GAMMILL, TIN LIZZIE, NOLTING'S, HANDI-QUILTER, A-1, ETC.***
