Specification Brand : N. Fasteners BulletPoint1 : One Piece, tamper-proof anchor for use in concrete, block, brick or stone BulletPoint2 : Formed with an "s" shaped configuration at the working end of the anchor to create an expansion mechanism BulletPoint3 : 100 per box BulletPoint4 : Product Dimension: 3.0"L x 6.4"W x 4.7"H BulletPoint5 : [Installation]: Easy to install, just pre-drill holes on the wall according to the specified specifications, and then use a hammer to insert the expansion body into the hole, so that the expansion tube expands and opens in the hole, thereby firmly fixing it on the wall. Color : Silver ExternallyAssignedProductIdentifier1 : 0749273242013 ExternallyAssignedProductIdentifier2 : 749273242013 ExternallyAssignedProductIdentifier3 : 00075352055312 IncludedComponents : Product & Instructions Guide ItemName : 1/4" X 4" Zinc Plated Hammer Drive Anchors (Box of 100) ItemPackageDimensions_Height : 16.4 centimeters ItemPackageDimensions_Length : 7.5 centimeters ItemPackageDimensions_Width : 11.8 centimeters ItemPackageQuantity : 1 ItemShape : Block ItemTypeKeyword : drive-anchors Manufacturer : N. Fasteners Material : zinc plated MaximumShearStrength : 450 MeasurementSystem : inch ModelNumber : 05531 NumberOfBoxes : 1 NumberOfItems : 100 NumberOfPieces : 1000 PartNumber : 144HDABX ProductDescription : 1/4" X 4" Zinc Plated Hammer Drive Anchors (Box of 100) ProductSiteLaunchDate : 2016-06-14T21:37:38.297Z Size : One Size SpecificUsesForProduct : Concrete SupplierDeclaredDgHzRegulation : not_applicable