These are made by SINGER (yes, the sewing machine company). They're a wonderful way to keep your bobbins color-matched with your thread so that you can start a project without searching around for the right color bobbin to match your thread. Make your life so much easier with these little gadgets!

A 20-piece assortment of red, grey, and white. Each bobbin pin is 2.625 inches x 1.875 inches at the base opening and 0.56 inches at the top ring.

Just remember, this is a special buy so when they're gone, they're gone.