| 摘要 |
An arrowhead of the type where several L-shaped thin blades are interchangeably secured to an elongated body, each end of each blade being removably received in separate narrow axial recesses in the body, at least one end of the body being slotted to form inwardly compressible segments which define slots for one end of each blade, with a threaded member being mounted on the end of the body to compress the segments and tightly grip those ends.
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