This J/111 Double Bobbin Inhauler is made of milled aluminum. It’s so strong, you don’t have to worry about it deforming under high loads. A continuous splice of 1/4″ AmSteel is secured around the bobbin. The splice acts as padding for the deck and mast.
The bobbin is kind to line; it has a smooth surface that won’t point load the line. With proper setup, this J/111 will be able to sustain a 4:1 advantage for ease of adjustment.