USA 12Pcs 20" Crossbow Bolts Carbon Arrows Half Moon Nocks 8.8mm Shaft Shooting Wind guide plume Specification: Length: 20 inches Weight: 28g/1pc Shaft Diameter: 8.8mm Material: carbon Screw on/off tips. Nock:Half moon Package: 12pcs Wall thickness: about 0.42mm Straightness ± 0.005 Weight error: ± 2%.
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