Specification Brand : The Hillman Group BulletPoint1 : Made of Steel/Zinc BulletPoint2 : Includes nut and washer BulletPoint3 : Use in solid concrete, brick and stone BulletPoint4 : Country of Origin: United States BulletPoint5 : Use one-fourth or less of listed maximum values for safe working loads (as required by local regulations) Color : No Color ExteriorFinish : Zinc ExternallyAssignedProductIdentifier1 : 008236433449 ExternallyAssignedProductIdentifier2 : 0008236433449 ExternallyAssignedProductIdentifier3 : 00008236433449 ItemDisplayWeight : 2.3 pounds ItemName : The Hillman Group 370987 Wedge Anchor, 1/2 X 2-3/4-Inch, 12-Pack ItemPackageDimensions_Height : 11 centimeters ItemPackageDimensions_Length : 6.4 centimeters ItemPackageDimensions_Width : 8.6 centimeters ItemPackageQuantity : 1 ItemShape : Block ItemTypeKeyword : anchor-bolts Manufacturer : The Hillman Group ManufacturerGrade : Grade 2 Material : Plastic MeasurementSystem : Inch MetalType1 : Alloy Steel MetalType2 : Zinc MinimumEmbedmentDepth : 0.75 inches ModelNumber : 370987 NumberOfItems : 12 NumberOfPieces : 12 PackageLevel : unit PartNumber : 370987 ProductDescription : - Pack of 20 NUZAMAS M6x80mm Expansion Bolts. Made by 304 Stainless Steel Strong, durable and heavy duty, strong anchoring force, suitable for long term usage - Resistance in rust and corrosion, suitable for both indoor and outdoor uses - Easy to use: It just need an Impact drill to drill a hole in the wall that is the same size as the expansion tube. And then put the expansion hook into the hole and tighten the hex nut. - Expansion is created by tightening a threaded bolt which draws a tapered cone expanding a sleeve against the walls of the hole. - widely used in household and office equipment, fences, security doors and windows, canopies, home decoration, communications equipment, industrial, furniture, home improvement inventions, construction fasteners, etc. Description: This M6x80mm expansion bolt anchor bolt is made with 304 Stainless Steel, strong, durable and heavy duty, moreover, it is resistance in rust and corrosion, suitable for indoor or outdoor, and long term usage. It is easy to use; you just need an Impact drill to drill a hole in the wall that is the same size as the expansion tube. How to install: 1. Use a drill bit to drill a hole of the same diameter as the expansion tube on the wall; 2. Install the fixing parts punched with holes on the fixed objects with bolts; 3. Knock the expansion screw set (together with the fixed object) into the hole; 4. Tighten the screw with a wrench, and the cone mother expands the expansion tube. Note: 1. You need to prepare a drill bit with a diameter of 10mm. 2. Please pay attention to the depth of the hole before installation. The depth of the hole is determined by the thickness of the item you are hanging. Specifications: Bolt size: M6 Length: 80mm Predrill Hole Size: 10mm Material: 304 Stainless Steel Packaging included: 20 x NUZAMAS M6x80mm Expansion Bolts