Bob-EEZ No Tangle Thread Bobbins - from The Bead Smith
Bead Smith plastic bobbins are the ideal containment solution for knitting/crochet colorwork, kumihimo, braiding, ribbon, and even beading cord. Flip open the bobbin and wind yarn on to the spool.
Available in 3 sizes: Small 1-7/8" (8 pieces per package); Medium 2.5" (8 pieces per package); Large 3.5"
4 pieces per package.