Specification Brand : MasonMate BulletPoint : These MasonMate Zinc Plated Studs have the following specifications: Size: M16. Length: 190mm. Hole Diameter: 18mm. Fastens up to: 45mm. Min. Hole Depth: 125mm. Box Qty.: 10. BulletPoint1 : Quality and precision at your fingertips BulletPoint2 : Easy to use: Convenient and simple use BulletPoint3 : Value for money BulletPoint4 : The Round Plastic Head is anti-corrosion and anti-aging, can be used for many years. BulletPoint5 : Easy to install and remove without any other tools, can be used repeatedly Color : silver/metallic DriveSystem : Internal Square DsaResponsiblePartyAddress : info@caterpillar-red.com ExteriorFinish : Zinc ExternallyAssignedProductIdentifier : 5050420553131 ExternallyAssignedProductIdentifier1 : 0306659360596 ExternallyAssignedProductIdentifier2 : 306659360596 ExternallyAssignedProductIdentifier3 : 00008236563047 GpsrSafetyAttestation : 1 GradeRating : Premium ItemName : MASONMATE Zinc Plated Stud M16 x 190mm (10) ItemPackageDimensions_Height : 180 millimeters ItemPackageDimensions_Length : 105 millimeters ItemPackageDimensions_Width : 55 millimeters ItemPackageQuantity : 1 ItemTypeKeyword : thread-forming-and-cutting-screws Manufacturer : MASONMATE Material : Stainless Steel Material1 : Stainless Steel Material2 : Nylon MeasurementSystem : Imperial MeasurementSystem1 : Imperial MeasurementSystem2 : Metric MetalType : Stainless Steel ModelNumber : MAMSTUDM16 NumberOfItems : 1 NumberOfPieces : 10 PackageLevel : unit PartNumber : MAMSTUDM16 ProductDescription : Thumb Screws with Knurled Round Plastic Head 1/4-20 X 1/2” length The oversized round knurled head is 1” in diameter. Thread Material – Stainless Steel Fully Threaded to within 1/8” of cap Head Diameter: 1" Head Thickness: 5/16” Total Length: 7/8” Welcome to Magic Hub store. Your satisfaction is our priority. If there are any questions before and after purchase, please welcome to contact us, we will try my best to solve all for you.