Material: Stainless Steel Size: Approx:8mm( 3/8") Dia. Hole size: 5.8mm Thickness: 1mm conversion : 1 inch = 25.4mm or 1mm = 0.0393 inch Color: Gold Plated Quantity: 15PCs per pack ~~~~~~~~~~~~~~~~~~~~~~~~ Free Shipping for each additional item! You pay shipping&handling fees only once per order, does not matter how many items you order. Buy more to save on shipping fees! Thank you!