Specification Brand : Aexit BulletPoint1 : Product Name: Expansion Bolt; Material: Stainless Steel BulletPoint2 : Weight: 152g; Package Content: 4 x Expansion Bolt BulletPoint3 : Overall Size: 70 x 15mm/2.8" x 0.59"(L*Max.D); Main Color: Silver Tone BulletPoint4 : Thread Dia: M8/0.31"; Sleeve Diameter: 11mm/0.43" BulletPoint5 : Phillips Head Width: 8mm/0.31"; Punch Diameter: 12mm/0.47" Color : Silver ExteriorFinish : Stainless Steel GradeRating : Grade 304 ItemName : Aexit M8 Thread Anchors 70mm Long Countersunk Flat Head Expansion Anchor Expansion Anchors Bolt 4pcs ItemTypeKeyword : expansion-shield-anchors Manufacturer : Aexit ManufacturerGrade : Grade 304 Material : Stainless Steel Material1 : Zinc Material2 : Bronze MeasurementSystem : Metric ModelNumber : modle NumberOfPieces : 2 PartNumber : f190412ae047512 ProductDescription : Made of metal material in silver tone, phillips flat head, exspansion anchor bolts. They can be widely used in fence, burglarproof doors and windows, canopy, air conditioning rack fixation, home decoration, engineering, etc. The working principle of expansion screw: 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. ProductSiteLaunchDate : 2018-09-29T06:55:19.489Z Style : Modern UnitCount : 1