Specification Brand : HARFINGTON BulletPoint1 : Size - Ring Size: 15x10mm/0.59"x0.39"(OD*ID), Thread Size: 6.6x3x5.5mm/0.26"x0.12"x0.22"(OD*ID*T), Nail Size: 7.5x8.2mm/0.3"x0.32"(ID*H), Total Length: 22mm/0.87", Punch Size: 3.5x97mm/0.14"x3.8"(D*L) BulletPoint2 : Material - The rivet ring is made of metal and has an electroplated surface that is not easy to rust, and the punch is made of carbon steel, has high hardness, is strong and durable. BulletPoint3 : Usage - Equipped with leather punch for easy installation. Pre-drill the holes with a leather hole punch, then tighten the screws on the base so they are secure and won't fall off. BulletPoint4 : Application - Can be used on wristbands, hats, jeans, belts, shoes, jackets, clothes, pet collars and more, suitable for leathercraft DIY projects such as decoration and repairs. BulletPoint5 : Note - Please use appropriate tools to install and tighten rivets, which ensures correct application of force and avoids damage to rivets or connections. CareInstructions : Hand Wash Only Color : Gold Tone FabricType : Leather FinishType : Finish GpsrSafetyAttestation : 1 IncludedComponents : inc ItemName : HARFINGTON 4pcs Metal Studs Rivets 6.6mm D-Ring Button Rivets with 3.5mm Leather Hole Punch for Leather Craft, Gold Tone ItemPackageDimensions_Height : 0.59 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 1 ItemTypeKeyword : leathercraft-rivets Manufacturer : HARFINGTON Material : Brass ModelName : NOENNULLh9dzs61xbm-11 ModelNumber : hta240313hh000334 NumberOfItems : 4 NumberOfPieces : 4 PartNumber : hta240313hh000334 PowerSourceType : PowerSource ProductDescription : The rivet ring is made of metal and has an electroplated surface that is not easy to rust, and the punch is made of carbon steel, has high hardness, is strong and durable. Equipped with leather punch for easy installation. Pre-drill the holes with a leather hole punch, then tighten the screws on the base so they are secure and won't fall off. Can be used on wristbands, hats, jeans, belts, shoes, jackets, clothes, pet collars and more, suitable for leathercraft DIY projects such as decoration and repairs.