Get more consistency in your stitches with these Wonderfil DecoBob Prewound Bobbins. Since they are uniformly wound, these bobbins have a higher density than if you had wound them with your domestic machine. This uniformness is especially handy when embroidering. Wonderfil's bobbins are wound with 80-weight Decobob thread on a reusable plastic bobbin, so there won't be any glue or wax holding it together to gum up your machine. These M style bobbins come 24 to a pack with each bobbin containing 210-yards of thread. Choose from 33 different colors to best suit your sewing project.