TenPoint Crossbow Technologies Crossbow Discharge Arrow Alpha-Nock. Equipped with an Alpha-Nock it can be used on most crossbows requiring flat moon or capture nocks. This universal Crossbow Discharge Arrow weighs 725-grains and includes a carbon arrow shaft with Alpha-Nock discharge collar and field tip. Specifications for TenPoint Crossbow Technologies Crossbow Discharge Arrow: Manufacturer: TenPoint Crossbow Technologies Fabric/Material: Carbon Quantity: 1 Length: 20 in Weight: 725 grain Nock Type: Alpha Nock Straightness: 0.003 in Included Accessories: Field Tip Discharge Collar Arrow Shaft Alpha Nock Package Contents: TenPoint Crossbow Technologies Crossbow Discharge Arrow TenPoint Crossbow Technologies HEA-00018: Crossbow Discharge Arrow Alpha-Nock