AAE Bitz Nock Receiver 3 and 4 Fletch Black. The fork within the receiver holds nocks in a consistent manner allowing for desired vane placement. Specifications for AAE Bitz Nock Receiver 3 and 4 Fletch: Manufacturer: AAE Color: Black Features of AAE AAE Bitz Nock Receiver: 3 or 4 vane fletch nock receiver Fork receiver better holds nocks in a consistent manner Constructed of anodized aluminum Package Contents: AAE AAE Bitz Nock Receiver AAE AAE Bitz Nock Receiver