The nock serves to keep the arrow in place on the string as the bow is being drawn. Our Nock are made from hard ABS plastic and is made to fit the 16 inch Aluminum Crossbow Arrows. It features a half moon style which curves perfectly on your crossbow string.
It Fits Perfectly On The Following Arrows:
Extra Survival Aluminum Arrow Black 16 Inch 6pcs Set
Survival Arrow Equipment Aluminum Red 16 Inch
Overall Length: 0.73 inch
Thickness: 1.92 mm