Why Do You Choose Us : The Jersvimc brand specializes in the manufacture of blind rivets parts. We have been operating in this field for many years. Jersvimc strictly controls materials and quality inspection, so it has won many loyal customers. When you try to choose the Jersvimc brand, you will be satisfied and will become one of the loyal users of our brand. The Specification : Material : Aluminum Color: Black Grip Length: 5/8 Inch / 16mm Rivet Diameter: 5/32 Inch / 4mm Riveting Grip Range: 11-12mm Package Included: 100 x black aluminum blind rivets. Warm Notices : 1.Since the size is manually measured, please allow an error of 1-2mm, and don't mind when you buy it. 2.The color of the product may vary slightly due to photography & your screen. 30-day best risk-free shopping guarantee! Jersvimc will guarantee product quality and after-sales service, and hope you will have a pleasant and satisfying shopping experience with us. If there is any problem with the product, please contact us by email first, Jersvimc provides a 30-day money-back guarantee or replacement of the defective product, and we will give you a satisfactory solution within 24 hours. Please let us help you solve any problems, thank you! Jersvimc sincerely looks forward to seeing you again