For Use In Saddlery, Harness, Tack Repair. Will Not Rust, Heavy Duty Permanent Fasteners. The Size Of The Head Of The Rivet And The Washer (Burr) Is 7/16" And The Thickness Of The Shaft Of The Rivet Is Just Over 1/8". Material of rivets: Solid brass Quantity: 20 pcs Shipping 1.If you need to buy in bulk, please contact, we will reply in 24 hours. 2.We are always working hard to ensure your package arrives as soon as possible. Please understand that some factors like weather, high postal traffic, and the performance of shipping companies are outside of our control. 3.Usually product Reaches after about 12-45 business days depending on destination. If you have not received your shipment within 45 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Refund or resend product will be offered if item still not received. 4.We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important. We ask you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns. It is impossible to address issues if we do not know about them!