| 摘要 |
An arrowhead having at least one blade, preferably between two to six blades, which are interchangeably mounted in a pivotal or a fixed position with respect to a blade carrying body. A pin is used to retain a corresponding blade in a pivotal or a fixed position with respect to a blade carrying body. When the blade is pivotally mounted a bias force of a retaining member is preferably selected so that each blade remains in a normally closed position during flight or during handling of the arrowhead, but yet responsively and quickly moves to a fully open position upon impact or when a sufficient opening force is applied to the blade.
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