The bobbins don’t get any bigger than this. Using the same construction techniques as other wooden Majacraft bobbins and hand turned to fit on the Overdrive head ensure that every one is beautiful and unique. They hold five litres of yarn (over a gallon!). This is five times more yarn than the Majacraft Jumbo bobbins. They run on a different size flyer axle so will only fit on the Overdrive Head.