Specification Brand : BLACKHEART ARCHERY BulletPoint : EASTON BCY NOCK AND PEEP TWINE BAG 1 RED/1 BLACK (EA) BulletPoint1 : LED lighted nocks: the battery is and battery leakage will not happen. BulletPoint2 : Bow accessorie: and LED lighted nocks. BulletPoint3 : Fit 6.2mm shaft: they do not have on/off , but they are turned on/off manually. BulletPoint4 : Nocks: assembling is very easy, which has been shown in the picture. BulletPoint5 : Bow accessories : made of hard and durable abs material, it can keep luminous over 48 hours. Color : Bluex2pcs Department : womens ExternallyAssignedProductIdentifier : 7802126021784 ExternallyAssignedProductIdentifier1 : 0811314027788 ExternallyAssignedProductIdentifier2 : 811314027788 ImportDesignation : Made in the USA or Imported IncludedComponents : Metal Accessory ItemDisplayWeight : 0.2 kilograms ItemName : Blackheart Crossbow String 39 1/2 in. Mission Sub-1XR ItemPackageDimensions_Height : 0.79 inches ItemPackageDimensions_Length : 2.76 inches ItemPackageDimensions_Width : 1.97 inches ItemPackageQuantity : 1 ItemTypeKeyword : archery-bowstrings Manufacturer : BESPORTBLE Material : Faux Leather ModelName : DAUZhtsx2iz8ef-14 ModelNumber : 541T383ROELT0753X5U NumberOfBoxes : 1 PartNumber : 541T383ROELT0753X5U Pattern : Solid ProductDescription : BlackHeart crossbow strings are crafted using the right blend of modern materials, machinery and time-honored techniques. These bowstrings feature GlideLock center serving which enhances durability, reduces friction, reduces serving separation and almost eliminates the ridges between the serving strands. The DuraWeave process includes pre-stretching the strands resulting in highly consistent string length. Each string is meticulously hand crafted to fit your crossbow ProductSiteLaunchDate : 2021-03-12T03:10:07.194Z Size : mediumx2pcs Style : Aikido SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredDgHzRegulation1 : not_applicable SupplierDeclaredDgHzRegulation2 : not_applicable SupplierDeclaredDgHzRegulation3 : not_applicable SupplierDeclaredDgHzRegulation4 : not_applicable SupplierDeclaredDgHzRegulation5 : not_applicable TargetAudience : adults UnitCount : 1 UnspscCode : 49000000 WarrantyDescription : No Warranty