Specification Brand : Coufce BulletPoint1 : High-Quality Material - These drop-in anchors are crafted from premium zinc-plated steel, providing excellent resistance to corrosion and ensuring their durability over an extended period. BulletPoint2 : Easy Installation Process - Drilling a hole and inserting the drop-in anchor into it is all you need to do. By fixing the anchor to the concrete using bolts or machine screws, the installation process becomes hassle-free. BulletPoint3 : Knurled Body Design for Enhanced Grip - The knurled body design of the drop-in anchor allows it to grip and hold the insert firmly in the concrete, ensuring stability and reliability. BulletPoint4 : Versatile Applications - Ideal for anchoring machinery, handrails, guardrails, shelving units, safety barriers, and more, these drop-in anchors offer versatility to cater to different requirements. BulletPoint5 : Important Usage Reminder - Before utilizing this product, please take note that drop-in anchors can only be used in masonry and solid concrete. They should never be utilized in block or brick base materials. DriveSystem : Slotted ExteriorFinish : Zinc ExternallyAssignedProductIdentifier1 : 0749273242457 ExternallyAssignedProductIdentifier2 : 749273242457 ItemName : Coufce 4pcs 1/2 Inch Drop in Anchors M12 Zinc Plated Carbon Steel Concrete Knurled Internal Forced Expansion Screw Bolts for Home and Construction ItemPackageDimensions_Height : 1.1 centimeters ItemPackageDimensions_Length : 8 centimeters ItemPackageDimensions_Width : 12 centimeters ItemPackageQuantity : 4 ItemTypeKeyword : drop-in-anchors Manufacturer : Coufce ManufacturerGrade : Grade 2 Material : Zinc Plated Carbon Steel Material1 : Carbide Material2 : Alloy Steel MeasurementSystem : inch MetalType : Carbon Steel (Zinc Plated) ModelNumber : Coufce2311280618 NumberOfItems : 1 NumberOfPieces : 4 PartNumber : Coufce231128-0618 ProductDescription : Coufce Drop in Anchors Zinc Plated Carbon Steel Concrete Knurled