Specification Brand : junter BulletPoint1 : Specification:M6x50mm expansion bolt,Thread Diameter:0.24inch/6mm,Total Length:1.97inch/50mm,Expansion Tube Diameter:0.31inch/8mm BulletPoint2 : Material: 304 stainless steel,sturdy and firm,resistant to rust and corrosion BulletPoint3 : Easy Install-Expansion Bolts come with nuts and washers.Concrete anchor and masonry anchor,easy to be mounted BulletPoint4 : Widely used for heavy duty use BulletPoint5 : Application-Expansion Bolts is widely used in fence,burglarproof doors and window,canopy,air conditioning rach fixation,home decoration,engineering,etc Color : Silver ExteriorFinish : Stainless Steel ExternallyAssignedProductIdentifier1 : 738287126839 ExternallyAssignedProductIdentifier2 : 0738287126839 ExternallyAssignedProductIdentifier3 : 00738287126839 GradeRating : Grade 304 IncludedComponents : Anchors(12) ItemName : Junter 8pcs M6 x 50mm Hex Expansion Bolts 304 Stainless Steel External Hex Nut Expansion Screw Bolts Sleeve Anchor,Pool Safety Cover Expansion Bolts,for Concrete ItemPackageDimensions_Height : 0.6 inches ItemPackageDimensions_Length : 4.8 inches ItemPackageDimensions_Width : 3.2 inches ItemPackageQuantity : 1 ItemTypeKeyword : expansion-shield-anchors Manufacturer : junter ManufacturerGrade : Grade 304 Material : Stainless Steel MetalType : Stainless Steel ModelName : 511098 ModelNumber : 014973511098 NumberOfItems : 8 NumberOfPieces : 8 PartNumber : LB ProductDescription : Description: Size:M6x50mm expansion bolt Thread Diameter:0.24inch/6mm Total Length:1.97inch/50mm Expansion Tube Diameter:0.31inch/8mm Package includes: 8 Pcs Expansion Bolts Universal replacement anchor assembly for in-ground swimming pool safety covers and mesh covers -Solid stainless steel anchor assembly,fits 0.31inch/8mm Hole -Universal replacement pool cover anchor for any safety covers -Designed for concrete and Pavers deck -Made from high quality 304 stainless steel metal-longer durability in harsh cold weather,humid environment 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 fence,burglarproof doors and window,canopy,air conditioning rach fixation,home decoration,engineering,etc. No rust,no deformation,non-pollution. How to use: Put the expansion screw into the ground or the hole on the wall and then tighten the nuts of the expansion bolt with wrench. The bolt goes outside while the metal sheath does not move. Thus the bigger head of the bolt will expand the metal sheath, making it fill the whole hole. Now, the expansion screw can not be pulled out.