5 1/2″ Left Wing Magnum or Banana Cut Shape. The Magnum Cut is a bigger feather designed for arrows with larger or heavier broadheads. This feather will average 19.5 millimeters tall at it’s highest point. Its average weight will be 4.26 grains each and is used for both hunting arrows and target arrows. This feather can be used on all types of arrow shaft materials. Is best applied with Gateway Feathers G1-Glue and can be used by either a right handed or left handed archer.