C&F Design Midge Bobbin Holder/LongA bobbin holder with a head that is about 10mm0. 4inch longer than the Midge regular size. By moving your hand slightly away from the bobbin holder, the tension that winds the thread around the hook becomes more subtle. Itis recommended for tires who frequently cut ultra fine threads during tying. It is also recommended for tires that are difficult to grip with a regular size bobbin holder with large hands. Uses high quality ceramic (zirconia) tubes