Specification Brand : uxcell BulletPoint1 : Size of Stainless Steel Expansion Hook: Maximum Loading Capacity: 370lbs(170kg). Overall length 4.33" (110mm). Hook inner diameter: 19mm. BulletPoint2 : Durable Material: The expansion bolt screw is made of durable 304 stainless steel, which is anti-rust, corrosion resistant, abrasion resistant, strong structure, and high hardness. It is no rust when used in a damp environment. BulletPoint3 : Easy to install: You can use a drill bit to drill holes in the wall or ground, then put a screw into drill holes, and tighten the expansion bolt with a wrench. The large end of the bolt will expand the metal sheath to fill the entire hole. The sleeve will firmly grip the wall to ensure the concrete hook does not fall off. BulletPoint4 : Wide Applications: These expansion bolt screws can be used for wall-ceiling concrete masonry, widely used in fence wire, sun shade sail, fence, cable railing, clotheslines, canopy, air conditioning fixation, home decoration, hardware, etc. BulletPoint5 : Package Contains: 6Pcs M8 open cup expansion hook with spring buckle. Enough durable and practical to meet your daily needs. BulletPoint6 : Thread Type: 20 (Coarse) BulletPoint7 : Specification(s) Met: ASME B1.1 BulletPoint8 : Hex nut included Color : Zinc ExteriorFinish : Zinc ExternallyAssignedProductIdentifier : 6942343612578 ExternallyAssignedProductIdentifier1 : 701063996759 ExternallyAssignedProductIdentifier2 : 0701063996759 ExternallyAssignedProductIdentifier3 : 00049793114518 GradeRating : Grade 2 ItemName : uxcell 6Pcs M8 304 Stainless Steel Expansion Hook with Spring Buckle, Standard Open Cup Expansion Bolt Screw Concrete Hook for Wall Ceiling Concrete Masonry ItemPackageDimensions_Height : 1.97 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 6 ItemTypeKeyword : expansion-bolts Manufacturer : uxcell ManufacturerGrade : Grade 2 Material : Carbon Steel MaximumWeightRecommendation : 170 kilograms MeasurementSystem : Inch MeasurementSystem1 : Imperial MeasurementSystem2 : Metric MetalType : Stainless Steel ModelNumber : a24011700ux0195 NumberOfHooks : 6 NumberOfItems : 6 NumberOfPieces : 20 PackageLevel : unit PartNumber : a24011700ux0195 ProductDescription : Size of Stainless Steel Expansion Hook: Maximum Loading Capacity: 370lbs(170kg). Overall length 4.33" (110mm). Hook inner diameter: 19mm. Durable Material: The expansion bolt screw is made of durable 304 stainless steel, which is anti-rust, corrosion resistant, abrasion resistant, strong structure, and high hardness. It is no rust when used in a damp environment. Easy to install: You can use a drill bit to drill holes in the wall or ground, then put a screw into drill holes, and tighten the expansion bolt with a wrench. The large end of the bolt will expand the metal sheath to fill the entire hole. The sleeve will firmly grip the wall to ensure the concrete hook does not fall off. Wide Applications: These expansion bolt screws can be used for wall-ceiling concrete masonry, widely used in fence wire, sun shade sail, fence, cable railing, clotheslines, canopy, air conditioning fixation, home decoration, hardware, etc. Package Contains: 6Pcs M8 open cup expansion hook. Enough durable and practical to meet your daily needs.