KQIMRIS Copper Whistle Arrowheads are made of high quality copper material, high hardness, wear-resistant, fine workmanship, smooth surface
Standard Universal Thread: #8-32 UNC, high versatility. Compatible with compound bow, recurve bow and crossbow bolts arrows
The signal arrowhead is used for transmit signals. It's sounds like whistle to warning someone or something while flying in the air. During long-distance archery training outdoors, the arrowhead emits a crisp sound, clearly marking the landing point of the arrow and enhancing the enjoyment of archery.
Package Contents: 6 Pack. Comes with a plastic storage box for convenient storage.