One of the most noticeable changes is the full-lenght reed stops. The wider reed cage and a combined 10.5% increase in reed tip area maximizes airflow. A pre-curved reed petal helps ensure a better seal at the tip. 2 - Reed cages with reeds installed 8 - 6mm-1.00x30mm hex head bolts 2 - 6mm-1.00 nuts 2 - 6mm flat washers 2 - Gasket.